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Tomtit [17]
4 years ago
7

Prove that cos^2A+sin^2A.cos2B=cos^2B+sin^2B.cos2A​

Mathematics
1 answer:
stiv31 [10]4 years ago
4 0

Notice that both sides of the equation have a similar form. If we ignore angle functions we end up with,

A+A\cdot B=B+B\cdot A

That is true if condition A=B is met.

Otherwise it is false.

Hope this helps.

r3t40

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