Question 956408: I'm having a little trouble with Algebra 2. Here's the problem. Find the exact value of each trigonometric function.
(A) sin 270o =
(B) cot (3 pi /2) =
I'm using a TI-83 Plus calculator, but I'm not sure how to input it. For (A) I came up with 'cot 4.71', but how do I calculate it?
PS, (A) and (B) are not part of the equation, my question is just divided into two parts.
Any help is appreciated, thanks!
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the exact value of each trigonometric function.
(A) sin 270 degrees = -1
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(B) cot (3 pi /2) = 0
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I'm using a TI-83 Plus calculator, but I'm not sure how to input it. For (A) I came up with 'cot 4.71', but how do I calculate it?
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Since tan(3pi/2) = -oo, cot(3pi/2) = 1/tan(3pi/2) = 0
Or Use 1/tan(4.71) = 0
Make sure your "MODE" (3rd line) is set to RADIANS.
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Cheers,
Stan H.
Answer by MathLover1(20850)  (Show Source):
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