Question

cot theta equal to 7/8 Evaluateb(1+sin theta)(1-sin theta)/(1+cos theta)(1-cos theta)

Answer 1

Answer:

49/64

Step-by-step explanation:

By pythagoras theorem,

Hypotenuse = Square root of 113

sin theta = 8/$\sqrt{113}$

Cos theta = 7/$\sqrt{113}$

After substituting the values, you get the equation in the form of (a+b)(a-b)

which is equal to $a^{2} - b^{2}$

Then take the LCM which is 113

then 113 in the numerator and denominator will get cancelled

After that you will get 49/64

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