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I am trying to help a friend but today I'm having a lot of trouble concentrating.

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I am trying to help a friend but today I'm having a lot of trouble concentrating.

The following formula must be converted (written over) in 'sin'

124 cos(wt)w=omega

He needs this answer tonight since he is writing a test tomorrow.

Please help

Anna
 Nov 8, 2012

2+0 Answers

 #1
avatar+3146 
0
lemma:
cos(x) = sin(π/2 - x)

Anna77:

124 cos(wt)w=omega


124 cos(wt) = 124*cos(w*t) = 124*sin( π/2 - w*t)
 Nov 8, 2012
 #2
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0
9[15-(3+4)]
 Nov 9, 2012

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