Question
Question: If \(\sin ^ { - 1 } x + \sin ^ { - 1 } y = \frac { 2 \pi } { 3 }\) then \(\cos ^ { - 1 } x + \cos ^ ...
If sin−1x+sin−1y=32π then cos−1x+cos−1y=
A
32π
B
3π
C
6π
D
π
Answer
3π
Explanation
Solution
sin−1x+sin−1y=32π
⇒ 2π−cos−1x+2π−cos−1y=32π ⇒ cos−1x+cos−1y=3π