SOLUTION: Sin120+cos^2 300/tan^2 135

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Question 610166: Sin120+cos^2 300/tan^2 135
Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
sin(120)
Since 120 is in the 2nd quadrant, the reference angle is 180 - 120 or 60 degrees.
sin(60) = sqrt%283%29%2F2
Since sin is positive in the 2nd quadrant sin(120) = sqrt%283%29%2F2

cos(300)
Since 300 is in the 4th quadrant, the reference angle is 360-300 = 60 degrees.
cos(60) = 1/2
Since cos is positive in the 4th quadrant, cos(300) = 1/2 and cos%5E2%28300%29+=+%281%2F2%29%5E2+=+1%2F4

tan(135)
Since 135 is in the 2nd quadrant, the reference angle is 180 - 135 = 45 degrees.
tan(45) = 1
Since tan is negative in the 2nd quadrant, tan(135) = -1 and tan%5E2%28135%29+=+%28-1%29%5E2+=+1

Since I cannot tell if you problem is
sin%28120%29%2Bcos%5E2%28300%29%2Ftan%5E2%28135%29
or
%28sin%28120%29%2Bcos%5E2%28300%29%29%2Ftan%5E2%28135%29
I'll leave it up to you to substitute in the values for sin(120), cos%5E2%28300%29 and tan%5E2%28135%29 and simplify.