Grade 11Trigonometry
Find sinx/2 cosx/2 tanx/2 in sinx=1/4 x in second quardrant
1 Answer
Arun
Sinx = ¼,
Hence cos x = 
15/4
We know that cosx = 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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