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Find the exact value of cos(a-b) if sin a = 1/3, sin b = 3/4 in quadrant 2?

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  • Find the exact value of cos(a-b) if sin a = 1/3, sin b = 3/4 in quadrant 2?


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... (A+B), cos(A+B), and tan(A+B), given: a.) sin A = 8/17, tan B ... find the exact values of sin(A+B), cos(A+B ... ----- c.) sin A = 1/3, sin B = 2 ...
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Positive: 19 %
In quadrant 2, sine is positive but cosine is negative sin a = 1/3 = opposite side / hypotenuse (in a right triangle) opposite side = 1 hypotenuse = 3 ...
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Positive: 16 %

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