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.

Browse exam papers

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Given that Sin x = 3/4 find without using tables or calculators.

Given that Sin x = 3/4 find without using tables or calculators.
a) Cos x
b) Tan (90 - x)

Answers

sharon kalunda answered the question on May 3, 2019 at 07:34

Answer Attachments

Next: Read the poem below and answer the questions that follow. Your Cigarette Burnt the Savannah Grass

Previous: Define permanent rivers

View more Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

A polygon of n sides has half of the interior angles 150⁰ each and the rest 170⁰ each. Find the value of n. (Solved)

A polygon of n sides has half of the interior angles 150⁰ each and the rest 170⁰ each. Find the value of n.

Date posted: May 3, 2019 . Answers (1)
If 2/3 is added to the numerator of a certain fraction the fraction will be increased by 1/21 and if 1/2 is deducted from its denominator... (Solved)

If 2/3 is added to the numerator of a certain fraction the fraction will be increased by 1/21 and if 1/2 is deducted
from its denominator that fraction becomes 2/9. Find the reciprocal of the fraction.

Date posted: May 3, 2019 . Answers (1)
Simplify the expression. (Solved)

Simplify the expression.

Hence solve the equation

Date posted: May 3, 2019 . Answers (1)
Simplify completely (Solved)

Simplify completely

Date posted: May 3, 2019 . Answers (1)
The position of two towns A and B on earth surface are (36⁰N, 49⁰E) and (36⁰N, 131⁰W) respectively.Take R = 6370 (Solved)

The position of two towns A and B on earth surface are (36⁰N, 49⁰E) and (36⁰N, 131⁰W) respectively.Take R = 6370
a) Find the difference in longitude between the town A and B.
b) Calculate the distance between A and B along the latitude in
i) nautical miles
ii) kilometres
c) i) Another town C is 840km East of town B and on the same latitude as town A and B . Find the position of town C.
ii) If the local time in B is 7.30 a.m, find the local time in C.

Date posted: May 3, 2019 . Answers (1)
The first, third and sixth terms of an arithmetic progression (AP) correspond to the first three consecutive terms of a geometric progression (GP). The first term... (Solved)

The first, third and sixth terms of an arithmetic progression (AP) correspond to the first three consecutive terms of a
geometric progression (GP). The first term of each progression is 16, common difference of AP and d and common
ratio of the GP is r.
a) i) Write two equations involving d and r.
ii) Find the values of d and r.
b) Find the sum of the first 20 terms in the
i) Arithmetic progression (AP).
ii) Geometric progression (GP)

Date posted: May 3, 2019 . Answers (1)
A company is to construct a parking bay whose area is 135m². It is to be covered with a concrete slab of uniform thickness of 150mm.... (Solved)

A company is to construct a parking bay whose area is 135m². It is to be covered with a concrete slab of uniform
thickness of 150mm. To make the slab, cement, ballast and sand are to be mixed so that their masses are in the ratio 1 :4 : 4. The mass of 1m³ of dry slab is 2500kg. Calculate
a) i) the volume of the slab.
ii) the mass of the dry slab.
iii) the mass of cement to be used.
b) If one bag of cement is 50kg, find the number of bags to be purchased.
c) If a lorry carries 7 tonnes of sand, calculate the number of lorries of sand to be purchased.

Date posted: May 3, 2019 . Answers (1)
Use method of completing of square leaving your answer in a simplified surds x² = 7x - 2 (Solved)

Use method of completing of square leaving your answer in a simplified surds x² = 7x - 2

Date posted: May 3, 2019 . Answers (1)
Given matrices A and C as follows; (Solved)

Given matrices A and C as follows;

Find a matrix B so that BA = c

Date posted: May 3, 2019 . Answers (1)
Find the value of x in the equation 10Cos²x - 7sinx + 2 = 0 for domain 0⁰= x = 360⁰. (Solved)

Find the value of x in the equation 10Cos²x - 7sinx + 2 = 0 for domain 0⁰≤ x ≤ 360⁰.

Date posted: May 3, 2019 . Answers (1)
Simplify the following expression as far as possible. (Solved)

Simplify the following expression as far as possible.

Hence or otherwise simplified

Date posted: May 3, 2019 . Answers (1)
The vectors a = (2x - 4)i + (x - 3)j + (x - 2)k and the length of /a/ = 7. Find two possible... (Solved)

The vectors a = (2x - 4)i + (x - 3)j + (x - 2)k and the length of /a/ = 7. Find two possible values of x.

Date posted: May 3, 2019 . Answers (1)
Given that (x - 2) is a factor of 3x² + kx - 2 find the value of k and hence the other factor. (Solved)

Given that (x - 2) is a factor of 3x² + kx - 2 find the value of k and hence the other factor.

Date posted: May 3, 2019 . Answers (1)
a) Expand and simplified the first four terms of the binomial expression (2 - 3x)⁶. (Solved)

a) Expand and simplified the first four terms of the binomial expression (2 - 3x)⁶.
b) Use the simplified expression in (a) above to estimate the value of (1.97)⁶ correct 5 decimal places.

Date posted: May 3, 2019 . Answers (1)
Two values X and Y are such that 3.5 < x < 4.9 0.03 < y < 0.27 What is the greatest possible value of x²/y (Solved)

Two values X and Y are such that
3.5 ≤ x ≤ 4.9
0.03 ≤ y ≤ 0.27
What is the greatest possible value of x²/y

Date posted: May 3, 2019 . Answers (1)
The equation of a circle is x² - 8x + y² + 12y = 12. Determine the centre and its radius of the circle. (Solved)

The equation of a circle is x² - 8x + y² + 12y = 12. Determine the centre and its radius of the circle.

Date posted: May 3, 2019 . Answers (1)
In the figure below XY is a tangent to a circle at YZ.VZ is a chord which produced to meet XY at Y. Given that... (Solved)

In the figure below XY is a tangent to a circle at YZ.VZ is a chord which produced to meet XY at Y. Given that XY = 9cm
and YZ = 6cm. Calculate the length of VZ.

Date posted: May 3, 2019 . Answers (1)
Without using mathematical tables evaluate, (Solved)

Without using mathematical tables evaluate,

Date posted: May 3, 2019 . Answers (1)
Make y the subject of the formula. (Solved)

Make y the subject of the formula.

Date posted: May 3, 2019 . Answers (1)
Use logarithms to evaluate. (Solved)

Use logarithms to evaluate.

Date posted: May 3, 2019 . Answers (1)