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Mathematics 14 Online
OpenStudy (anonymous):

cos2θ=2-2sin^2θ

OpenStudy (anonymous):

cos2a = cos^2a - sin^2a = 1 - 2sin^2a

OpenStudy (anonymous):

can you simpliy that for me i need it to be like something around θ=40 degrees or what ever it would be

OpenStudy (anonymous):

???

OpenStudy (anonymous):

you can't get the answer no solution

OpenStudy (anonymous):

but it doesnt say simplify is says to solve for θ

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