nilai 2 sin a cos a/cotan a + 2/sec^2 a =

[tex] \frac{2sina.cosa}{cotana} + \frac{2}{sec ^{2}a } =....... \\ \frac{2 sina.cosa}{ \frac{cosa}{sina} } + \frac{2}{ \frac{1}{cos^2 a} } =....... \\ \frac{2sina.cosa}{ \frac{cosa}{sina} } \frac{sina}{sina} +2 . \frac{cos^2a}{1} =....... \\ \frac{2sin^2a.cosa}{cosa} + 2cos^2a = ........ \\ 2sin^2a + 2cos^a = 2 [/tex]