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Evaluate:sin75^@ cdot cot15^@...

Evaluate:`sin75^@ cdot cot15^@`

Text Solution

Verified by Experts

`sin75^@cos15^@=1/2(2sin75^@cos15^@)
=1/2(sin90^@+sin60^@)`
`=1/2(1+sqrt(3)/2)
`(sqrt(3)+2)/4`
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PATHFINDER-TRANSFORMATION FORMULAE-QUESTION BANK
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