Divide both side by cos^2x and we get sin^2x/cos^2x cos^2x/cos^2x = 1/cos^2x tan^2x 1 = sec^2x tan^2x = sec^2x 1 ConfirmingTan^2xsec^2x/1ta...
Tan 2x all formula 109641-Tan 2x all formula
The formula given in my book does not seem to work in Mathcad Prime 30 In the book there is no multiplier (*) printed after tan^2 and cos^2...
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