SOLUTION: if cos theta= .5 find cos(theta+pi)
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Question 787336: if cos theta= .5 find cos(theta+pi)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
\ =\ \cos(\varphi)\cos(\pi)\ -\ \sin(\varphi)\sin(\pi})
But \ =\ 0)
and \ =\ -1)
So
\ =\ -\cos(\varphi))
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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