Question

answer it fast please I am in a exam please don't spam​

Answer 1

Step-by-step explanation:

cos theta cos theta

--------------------- + ---------------------- =

cosec theta + 1 cosec theta - 1

cos theta (cosec theta -1) + cos theta (cosec theta + 1)

---------------------------------------------------------------------------- =

cosec^2 theta - 1

(cos theta)(cosec theta) - cos theta + (cos theta)(cosec theta) + cos theta / cot^2 theta =

2(cos theta)(cosec theta)

------------------------------------ =

cos^2 theta/sin^2theta

2×cos theta × 1/cos^2 theta × sin^2theta × 1/sin theta =

2 sin theta / cos theta = 2 tan theta

formulae :

cosec^2 theta - 1 = cot ^2 theta

cosec theta = 1/sin theta

cot theta = cos theta / sin theta

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