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Find the value of : a) sinpi/19+sin(13...

Find the value of :
a) `sinpi/19+sin(13pi)/10`
b) `cos^(2)48^(@)-sin^(2)12^(@)`

Text Solution

Verified by Experts

The correct Answer is:
(a) `-(1)/(2)` (b) `(sqrt(5)+1)/(8)`
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