Sin x cosec x - sin2x =cos2x
Matematika
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Pertanyaan
Sin x cosec x - sin2x =cos2x
1 Jawaban
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1. Jawaban bapakdr
sin x coses x - sin²x
= sin x (1 / sin x) - sin²x
= sin x/sin x - sin²x
= 1 - sin²x
= cos²x