mawfikomarmehs mawfikomarmehs

28-06-2017
Mathematics

contestada

Which expression completes the identity cos u cos v=

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mreijepatmat mreijepatmat

05-07-2017

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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sofiavictoria24 sofiavictoria24

24-12-2018

A is the correct answer.

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