Mathematics, 21.06.2020 07:57 obryonshaniya10
Find the exact value of the expressions cos (a + b), sin (a + B) and tan (a + b) under the following conditions:
15
cos(a)= 17
a lies in quadrant IV, and sin () =
- 2
5
Blies in quadrant III.
Answers: 3
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Find the exact value of the expressions cos (a + b), sin (a + B) and tan (a + b) under the following...
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