Asked by Kimmy

find the value for the indicated trig function for ø, if ø is an angle in standard position with the terminal side defined by the given point. (18,24); find cos ø
Answered by Steve
recall that cosine = x/r
And, r^2 = x^2+y^2
Answered by Reiny
r^2 = 18^2+24^2
..
r = 30

cosØ = x/r = 18/30 = 3/5
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