Prove that (sin3A sinA)sinA+ (cos3A -cosA)cosA= 0
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Answer:
Step-by-step explanation:
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Answered by
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Given:
An equation that is
To prove:
The above equation must be equal to 0
Solution:
The equation is
Solving for LHS:
Rearranging the equation:
Using the identities:
The equation forms:
Hence proved
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