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Prove that:cos^8A+sin^8A=1-sin^2 2A+1/8sin^4 2A
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Prove that:cos^8A+sin^8A=1-sin^2 2A+1/8sin^4 2A
Sandesh Sir Tuition
Trigonometry
Trigonometry important question
Construction
Statistics
class 9 laws of indices
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