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Find sinx/2 cosx/2 tanx/2 in sinx=1/4 x in second quardrant
Sinx = ¼, Hence cos x = 15/4We know that cosx = 1- 2 sin²(x/2)15/4 = 1- 2 sin²(x/2)Sin²(x/2) = (1/2) [1- 15/4]Sin(x/2) = (1/2) [1- 15/4] I think, now you will be able to solve other values
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