SOLUTION: HELP please. The question reads; use the given information given to find the exact value of the trigonometric function cos theta (-3/5) sin theta>0 Find cos (theta/2)

Algebra ->  Trigonometry-basics -> SOLUTION: HELP please. The question reads; use the given information given to find the exact value of the trigonometric function cos theta (-3/5) sin theta>0 Find cos (theta/2)      Log On


   

Question 320866: HELP please.
The question reads; use the given information given to find the exact value of the trigonometric function
cos theta (-3/5)
sin theta>0
Find cos (theta/2)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The question reads; use the given information given to find the exact value of the trigonometric function
cos theta (-3/5)
sin theta>0
sin%28t%29+=+sqrt%281+-+cos%5E2%28t%29%29
sin%28t%29+=+sqrt%281+-+9%2F25%29+=+sqrt%2816%2F25%29
sin(theta) = 4/5
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Find cos (theta/2)
Google half-angle formulas