Plz solve 3rd part
Q.3. Total number of ordered pairs (x, y) satisfying | y | = cos x and y = sin   - 1 sin   x   w h e r e   x 3 π is equal to:
(A) 2
(B) 4
(C) 6
(D) 8

Dear Student,
Please find below the solution to the asked query:

We havey=cosx....iy=sin-1sinx....iiBy i and iisin-1sinx=cosxNowx3πHence-3πx3πNow we will draw graph of both sin-1sinx and cosx in -3πx3πand count number of point of intersection to get number of solutions.

As there are 6 points of intersection, hence there will be 6 solutions.

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