Ask a New Question

Question

Use half-angle formulas to find the exact value for the following
cot 75 degrees
17 years ago

Answers

drwls
75 degrees is one-half of 150 degrees, and you should know the sin and cosine of that. Let A/2=75 so that A = 150. Then use this half angle formula for cot A/2

cot(A/2) = +/- (1 + cos A)/sin A

You will have to pick the sign to go with the quadrant. In the first quadrant, it is positive
17 years ago

Related Questions

1) use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the... 1) Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the... Half angle identities Find exact values of a) cos 1/2 b) sin 1/2 c) tan 1/2 based on: cos = 1... Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the an... Use the half-angle formulas to come up with an exact expression for each function value below. You d... Use the half-angle formulas to find the exact values. Cosine 165 degrees, Sine 157 degrees 30' and t... half angle formula to find exact value cos 112.5 degree Use compound angle formulas to evaluate a) cos(pi/12) b) sin(pi/12) c) tan(5pi/12) d) si... Use double angle formulas to evaluate exact measures of a) sin(π/12) b) cos(3π/8)
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use