August 2018 1 25 Report
bagaimana membuktikan setiap identitas trigonometri berikut :

1. 1+cosA = sin^2A/1-cosA

2. (secx+tanx)^2=1+sinx/1-sinx

3. cotB+tanB = cscB.secB

4. (secQ.cscQ-cotQ).(sinQ-cscQ) = -cosQ


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