(sin Delta +cos Delta) kuadrat-2tan Delta cos kuadrat Delta =1
Matematika
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Pertanyaan
(sin Delta +cos Delta) kuadrat-2tan Delta cos kuadrat Delta =1
1 Jawaban
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1. Jawaban SadonoSukirno
(sin d + cos d)² - 2 tan d cos²d
= sin²d + 2.sin d.cos d + cos²d - 2(sin d/cos d) cos²d
= sin²d + cos²d + 2.sin d.cos d - 2.sin d.cos d
= 1 + 0
= 1