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Mathematics, 04.06.2020 13:20 adamsc819

Can someone help me with this? Use the information given below to find cos(a-b).

sin(a) = -3/5, with a in quadrant 3.
cos(b) = 4/5, with b in quadrant 4.

Give the exact answer, not a decimal approximation.

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Can someone help me with this? Use the information given below to find cos(a-b).

sin(a)...

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