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Question

sin1a+sin1β+sin1y=3π2,then aβ+ay+βy is equal to


A
1
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B
3
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C
-3
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Solution

The correct option is B 3

Since,
sin,π2sin1xπ2,
sin1a=π2,sin1β=π2,sin1y=π2
a=β=y=1. Thus, aβ+ay+βy=3


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