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n200080
[17]
2 years ago
8
Which expression completes the identity cos u cos v=
Mathematics
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2
answers:
salantis
[7]
2 years ago
4
0
Cos(u+v) = cosu.cosv - sinu.sinv and cosu.cosv= cos(u+v) + sinu.sinv
or
cos(u - v) = cosu.cosv + sinu.sinv and cosu.cosv= cos(u+v) - sinu.sinv
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Alex73
[517]
2 years ago
4
0
A is the correct answer.
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