jika sin x = 1/tan x, maka nilai cos x =

[tex] \sin( \alpha ) = \frac{1}{ \tan( \alpha ) } = \cot( \alpha ) \\ = \frac{ \cos( \alpha ) }{ \sin( \alpha ) } \\ \cos( \alpha ) = \sin ^{2} ( \alpha) \\ \\ [/tex]
cmiiw