Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

From a point A, the angle of elevation of top of a watch tower is 20⁰.From another point which is 25m from the base of...

From a point A, the angle of elevation of top of a watch tower is 20⁰.From another point which is 25m from the base of the tower, the angle of elevation of the top of the tower is 26⁰.Giving your answer to three decimal places, determine the height of the tower and hence calculate the distance between the points A and B if they are both on the same side of the tower and lie on a straight line with the base of the tower.

Answers

sharon kalunda answered the question on August 14, 2019 at 14:08

Answer Attachments

Next: Two boys and a girl shared some money .The elder boy got four-nineth of it, the younger boy got two-fifth of the reminder and the...

Previous: If X is a positive integer, find all possible values of x given that

View more Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

Two boys and a girl shared some money .The elder boy got four-nineth of it, the younger boy got two-fifth of the reminder and the... (Solved)

Two boys and a girl shared some money .The elder boy got four-nineth of it, the younger boy got two-fifth of the reminder and the girl got the rest. Find the percentage share of the younger boy to the girl’s share.

Date posted: August 14, 2019 . Answers (1)
Without using mathematical tables or calculators, evaluate the following leaving your answer as a fraction in its simplest form. (Solved)

Without using mathematical tables or calculators, evaluate the following leaving your answer as a fraction in its simplest form.

Date posted: August 14, 2019 . Answers (1)
The diagram below shows the sketch of the curve y = x² and y = -x² + 8 intersecting at A and B. a) Find the... (Solved)

The diagram below shows the sketch of the curve y = x² and y = -x² + 8 intersecting at A and B.

a) Find the value of a and b hence find the co-ordinates of A and B.
b) Find the area enclosed by x = a and x = b, The x axis and
i) The curve y = x²
ii) the curve y = -x² + 8
c) Find the area of the shaded region.

Date posted: August 14, 2019 . Answers (1)
Three businessmen Mutuku, Mutiso and Kitili decided to buy a bus. The market price of the bus was sh2,800,000. The men could pay a deposit... (Solved)

Three businessmen Mutuku, Mutiso and Kitili decided to buy a bus. The market price of the bus was sh2,800,000. The men could pay a deposit of 60% of the money and the rest to be paid within one year. Mutuku, Mutiso and Kitili raised the deposit in the ratio 3:2:5 respectively. The balance was to be paid to the dealer from the proceeds of the bus in the same deposits. During the year the bus realized sh.2,080,000
a) How much deposit did each contribute?
b) How much of the remaining amount did Kitili pay at the end of the year?
c) After paying the remaining amount at the end of the year, how much money was Mutuku left with?

Date posted: August 14, 2019 . Answers (1)
Using a ruler and a pair of compasses only,i) Construct a quadrilateral ABCD with AB = 6cm, BC = 5cm, CD = 8cm, AD =... (Solved)

Using a ruler and a pair of compasses only,
i) Construct a quadrilateral ABCD with AB = 6cm, BC = 5cm, CD = 8cm, AD = 7cm and angle ABC = 150^o
ii) Construct a circle that will pass through points A, D and C.
iii) Find the shortest distance from the centre of the circle to side AB.
iv) Measure the length constructed in (iii) above.

Date posted: August 14, 2019 . Answers (1)
In the figure below P and Q are centres of two circles intersecting at A and B. The radii are 5cm and 8cm as shown in... (Solved)

In the figure below P and Q are centres of two circles intersecting at A and B. The radii are 5cm and 8cm as shown in the diagram. Length of AB = 8cm.

Determine;
a) Length PQ
b) The size of angle APB
c) The area of the shaded region.

Date posted: August 14, 2019 . Answers (1)
The length of a room is 3m loner than its width. A carpet whose area is 18m² is laid in the middle of the room... (Solved)

The length of a room is 3m loner than its width. A carpet whose area is 18m² is laid in the middle of the room leaving a margin of 0.5m wide between the carpet and the wall all round the room.
a) If the width of the room is x, write an expression for the dimensions of the carpet in terms of x.
b) Express the area of the carpet in terms of x
c) Determine the dimensions of the room.
d) Determine the space between the carpet and the wall is covered by a material which costs sh 245 per square metre. Find the cost of the material required.

Date posted: August 14, 2019 . Answers (1)
The table below shows the length of 40 carrot seedlings. a) Determine the; i) Modal class. ii) Median class. b) calculate; i) The mean length of the seedlings. ii)... (Solved)

The table below shows the length of 40 carrot seedlings.

a) Determine the;
i) Modal class.
ii) Median class.
b) calculate;
i) The mean length of the seedlings.
ii) The median of the seedlings.

Date posted: August 14, 2019 . Answers (1)
Find the equation of a perpendicular bisector to line AB given that A (2, 3) and B (-6, 5). Give your answer in the form... (Solved)

Find the equation of a perpendicular bisector to line AB given that A (2, 3) and B (-6, 5). Give your answer in the form y = mx + C.

Date posted: August 14, 2019 . Answers (1)
On a day when the currency exchange rate was 100 Japanese Yen = Ksh 72.50 a Japanese tourist exchanged all his money and received Ksh.... (Solved)

On a day when the currency exchange rate was 100 Japanese Yen = Ksh 72.50 a Japanese tourist exchanged all his money and received Ksh. 34,800. If the bank charged him a commission of 4% on the transaction, calculate the number of Japanese Yen he exchanged.

Date posted: August 14, 2019 . Answers (1)
In the diagram below, ABCD is a parallelogram AD is produced to E and BE and CD meet at F.If o and (Solved)

In the diagram below, ABCD is a parallelogram AD is produced to E and BE and CD meet at F.

If o and o, find the size of angle ABF.

Date posted: August 14, 2019 . Answers (1)

The interior angle of a regular polygon is 20^o more than three times the exterior angle. Determine the number of sides of the polygon. (Solved)

The interior angle of a regular polygon is 20^o more than three times the exterior angle. Determine the number of sides of the polygon.

Date posted: August 14, 2019 . Answers (1)
Solve for x without using tables. Sin (2x – 30^o) – cos 4x = 0 for 0^o = x = 90^o. (Solved)

Solve for x without using tables.
Sin (2x – 30^o) – cos 4x = 0 for 0^o ≤ x ≤ 90^o.

Date posted: August 14, 2019 . Answers (1)
Jane spent two-thirds of her April salary on school fees for her children and two-fifth of the remainder on food. If she was left with... (Solved)

Jane spent two-thirds of her April salary on school fees for her children and two-fifth of the remainder on food. If she was left with sh.6000, what was her net pay?

Date posted: August 14, 2019 . Answers (1)
The longest side of a right angled triangle is (9x – 2)cm. The other two sides are 8x cm and (2x + 1)cm long. Find... (Solved)

The longest side of a right angled triangle is (9x – 2)cm. The other two sides are 8x cm and (2x + 1)cm long. Find x and hence the lengths of the triangle.

Date posted: August 14, 2019 . Answers (1)
Train A and B moving in the same direction are 10m apart. Train A is 3m long and moves at 100km/hr while train B is... (Solved)

Train A and B moving in the same direction are 10m apart. Train A is 3m long and moves at 100km/hr while train B is 10m long and moves at 50km/hr. Find how long it will take a train A to overtake train B.

Date posted: August 14, 2019 . Answers (1)
A cone of slant height 8cm is formed from a circle sector of angle 108^o as shown below. Find the volume of the cone. (Solved)

A cone of slant height 8cm is formed from a circle sector of angle 108^o as shown below. Find the volume of the cone.

Date posted: August 14, 2019 . Answers (1)
Solve for x in the following expression. (Solved)

Solve for x in the following expression.

Date posted: August 14, 2019 . Answers (1)
Two similar containers have base area of 750cm² and 120cm² respectively. Calculate the volume of the larger container in litres given that the volume of... (Solved)

Two similar containers have base area of 750cm² and 120cm² respectively. Calculate the volume of the larger container in litres given that the volume of the smaller one is 400cm³.

Date posted: August 14, 2019 . Answers (1)
Two translations T1 and T2 are represented by the vectors and respectively.Triangle ABC whose vertices are A (2, 3), B (4, 6) and C (3,... (Solved)

Two translations T1 and T2 are represented by the vectors respectively.Triangle ABC whose vertices are A (2, 3), B (4, 6) and C (3, 5) is mapped onto triangle A1B1C1 under the combined translation T2T1. Determine the co-ordinates of A1B1 and C1.

Date posted: August 14, 2019 . Answers (1)