2 g) Find the exact value of cos(A – B) given: tan A = - 2 if angle A is in quadrant 1 and cos B = - if angle B is in quadrant 3. 5 3 g) -10 - 2√5 3√29 g) Find the exact value of cos (4 – B) given: tan A = 2 if angle A is in quadrant 1 and cos B = - 3 5 if angle B is in quadrant 3.

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