Question

solve this question with explanation plz
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Answer 1

Answer:

cot theta=7/8 means cos/sin=7/8

then Cod =7 and sin=8

(8+1)(8-1)/(7+1)(7-1)

=9*7/8*6

=63/48

=21/16

Step-by-step explanation:

Answer 2

Answer:

I m taking theta=A for ease

Step-by-step explanation:

Cot A = 7/8

(1+SinA)(1-SinA) / (1+CosA)(1-CosA)

=1-sin²A / 1- cos²A {(a+b)(a-b)=a²-b²}

=cos²A / sin²A (I hope you should know what happened in this step)

=cot²A (cos²A/sin²A= cot²A)

=(7²)/8²

=49/64

Here is your answer

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