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How do I solve B in this finite Math problem shown in the picture below? PROVE EACH EQUATION IS AN IDENTITY Q1: 1-sec(x)cos3(x)=sin2(x) Q2:(1-cot^2(w)+cos^2(w)*cot^2(w))/csc^2(w) =sin^4(w)? Algebra= what expression is equivalent to (6x-8x)^2 x 1/2 +3x^2? Solve for n. answer is given. just need steps? Why a charge of $19.99 for yahoofreemail?