Question

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Answer 1

Answer:

$\text{Solution: }\\\\\sin A=\dfrac{32}{40}\\\\\text{or, }\sin A=\dfrac{4}{5}\\\\\text{or, }A=\sin^{-1}\dfrac{4}{5}\\\\\text{or, }A\approx53.1^\circ$

$\cos B=\dfrac{32}{40}\\\\\text{or, }\cos B=\dfrac{4}{5}\\\\\text{or, }B=\cos^{-1}\dfrac{4}{5}\\\\\text{or, }B\approx36.9^\circ$