Algebra 2/ Trigonometry

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If cos θ = c, then sinĀ²θ/2 equals

1) 1-c/2
2) 1+c/2
3) 1-c/c+c
4) 1-c/4

  • Algebra 2/ Trigonometry -

    cos^2 = c I suspect typo
    1 - sin^2 = c
    sin^2 = 1 - c

    sin^2 /2 = (1-c)/2 not 1 - c/2

    I am not a mind reader. Please check what you type to make sure it makes sense.

  • Algebra 2/ Trigonometry -

    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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