October 2018 1 364 Report
Tunjukkan bahwa identifikasi trigonometri di bawah ini benar/terbukti
a.sin2 60 derajat + cos2 60 derajat = 1
b.cos 30 derajat - sin2 30 derajat = cos 60 derajat
c.sec2 60 derajat - cot2 30 derajat = 1
d.cosec2 30 derajat – cot2 30 derajat = 1
e.sin (60 derajat + 30 derajat) = sin 60 derajat . cos 30 derajat + cos 60 derajat . sin 30 derajat

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