cos2θ=2-2sin^2θ - QuestionCove

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Mathematics 17 Online

OpenStudy (anonymous):

cos2θ=2-2sin^2θ

15 years ago

OpenStudy (anonymous):

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

15 years ago

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

15 years ago

OpenStudy (anonymous):

???

15 years ago

OpenStudy (anonymous):

you can't get the answer no solution

15 years ago

OpenStudy (anonymous):

but it doesnt say simplify is says to solve for θ

15 years ago

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