Math, asked by Anonymous, 4 months ago

Find the exact value of the trigonometric function given that tan alpha = 3/4 and cos beta = -4/5 where alpha is in quadrant 1 and beta is in quadrant 3.

1. sin(alpha+beta)
2.cos beta/2 cos alpha
3.tan(beta - 2alpha)

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Answered by Anonymous
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bts \: exo

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