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Prove that:
RHS
We know that cos(A +B) = cosA cosB - sinA sinB
= LHS
Hence, proved.
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that:
Prove that: