Why do you think it is usually preferable to start with the side containing the more...

Why do you think it is usually preferable to start with the side containing the more complicated expression when establishing a trigonometric identity?
Find the values of a and b for which cos²θ = (2ab)/(a² + b²) is possible.

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Expert Solution

(a)

(b)

Colby Messinger answered 1 year ago

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