The expression (cos 45°) (cos 30°) - (sin 45°) (sin 30°) can be rewritten as which of the following?

A: Trigonometric identities help to find and simplify the given expressions. Trigonometric identities…

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A: 1) cos90 2)tan135

A: The objective of the question is to verify the trigonometric identity Cos(theta + 360°) = cos theta.…

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A: Let's find.

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A: cos10°cos50°cos70°=√3/8Explanation:Step 1: Step 2: Step 3: Step 4:

A: For the given triangle Hypotenuse( h ) = y base( b ) = 8 Perpendicular( p ) = x

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A: Given: 8  3cosθ+sinθ21+2sinθcosθ   9  csc2θ+cot2θcsc4θ-cot4θ

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