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Question : 7
Total: 50
The principal value of cos − 1 (
) + s i n − 1 ( −
)
Solution: 👈: Video Solution
Explanation: cos − 1 (
) + s i n − 1 (
)
= cos − 1 ( cos
) − s i n − 1 (
)
=
− s i n − 1 ( s i n
)
=
−
=
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