Sin45- A cos45- B -cos45- A sin45- B A- cos BB- sin A - B C- cos90- A D- cos A-B

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Standard Values of Trigonometric Ratios

Sin45∘- A cos...

Question

Sin(45^o – A) cos(45^o - B) + cos(45^o – A) sin(45^o – B)

cos(B)

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sin(A+B)

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cos (90^o – A)

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cos(A+B)

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Solution

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