Mathematics, 30.01.2020 23:47, zoe2252

Given cos = -2/5 a in quadrant iii and cos b = 1/4, b in quadrant i find

sin(a+b)
cos(a+b)
tan(a+b)

Answers: 2

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Given cos = -2/5 a in quadrant iii and cos b = 1/4, b in quadrant i find

sin(a+b)