Solve the following equations given that .

Your help is really appreciated. Thanks.

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- December 3rd 2009, 10:48 AMSavior_SelfSolving with Trig Identities..
Solve the following equations given that .

Your help is really appreciated. Thanks. - December 3rd 2009, 11:09 AMLight

Your help is really appreciated. Thanks.[/quote]

a) Replace sin^2 X by 1-cos^2 X.

The equation becomes 2cos^2 X =2 - December 3rd 2009, 11:14 AMLight