Use reciprocal, cosine and square tables only to evaluate to 4s.f the expression. 1/15.79 - (cos 73.61)²

Use reciprocal, cosine and square tables only to evaluate to 4s.f the expression.
1/15.79 - (cos 73.61)²

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Kavungya answered the question on October 9, 2019 at 07:50

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