Can someone walk me through the following problem: Find sin2(x) , cos2(x), and tan2(x) if cos(x) = -3/[(13)^(1/2)] and x terminates in quadrant II Thank You.
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Originally Posted by super Can someone walk me through the following problem: Find sin2(x) , cos2(x), and tan2(x) if cos(x) = -3/[(13)^(1/2)] and x terminates in quadrant II Thank You. Hi super, Since , this means that and . Using , you can determine that . This would make Note that Substituting, we arrive at . Use the double angle identities for and to complete your assignment.
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