Algebra 2/ Trigonometry
posted by Moe .
If cos θ = c, then sinĀ²θ/2 equals
1) 1c/2
2) 1+c/2
3) 1c/c+c
4) 1c/4

cos^2 = c I suspect typo
1  sin^2 = c
sin^2 = 1  c
sin^2 /2 = (1c)/2 not 1  c/2
I am not a mind reader. Please check what you type to make sure it makes sense. 
I typed what i wrote correctly these questions are from a work sheet therefore your smart comments aren't needed if you simply can not solve it, just don't post.
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