Find the exact value of cos (a - b) if sin a =
3
5
and cos B =
5
13
w...
Mathematics, 13.12.2020 15:20 Ilcienne6590
Find the exact value of cos (a - b) if sin a =
3
5
and cos B =
5
13
with a in quadrant III and B in quadrant IV.
cos (a - b) = ?
Answers: 1
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