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If alpha+beta+90^0 , find the maximum an...

If `alpha+beta+90^0` , find the maximum and minimum values of `s inalphas inbetadot`

Text Solution

Verified by Experts

Let
`y=sin alpha sin beta`
`=sin alpha sin (90^(@)-alpha)`
`=sin alpha cos alpha=(1//2)sin 2alpha`
Which has the maximum value `1//2` when `sin 2alpha=1`.
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