Buktikan 1/(1+cos x)+1/(1-cos x) = 2 cosec^2 x.

Saluran Edukasion 2024-05-16T06:46:43

Buktikan 1/(1+cos x)+1/(1-cos x) = 2 cosec^2 x.
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Buktikan 1/(1+cos x)+1/(1-cos x) = 2 cosec^2 x.