If Sin A+sin^3A=cos^2A,prove that cos^6-4cos^4+8cos^2A=4?................
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If Sin A+sin^3A=cos^2A,prove that cos^6-4cos^4+8cos^2A=4?................
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Answer:
Step-by-step explanation:
/* On Squaring both sides of the equation,we get
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Verified answer
The proof is given below..........
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