Nilai tan^2 phi/6 -sec^2 phi/4 + cosec 5phi/6 ??
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Nilai tan^2 phi/6 -sec^2 phi/4 + cosec 5phi/6 ??
1 Jawaban
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1. Jawaban 18Navillera
tan²phi/6 - sec²phi/4 + cosec 5phi/6
= (1/3 akar akar3)² - (akar 2)² + 2
= 1/3 - 2 +2
= 1/3