HELP with pre-cal please

[From: ] [author: ] [Date: 11-12-09] [Hit: ]

so cot pi/6 is sq. root of 3, cot 3pi/2 is also 0. Use a calculator for the last three, its not hard. Just plug it in.......

HELP with pre-cal please?
How do you do these problems?
Find the exact trig values for each of the following:

tanpi
cot pi/6
cot 3pi/2

Evaluate with a calculator:
sin14.6
cos11pi/7
cospi/4

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If you have memorized the unit circle, you would know that pi is (-1,0). Therefore tangent is y/x, so it would be 0/-1 = 0. Cotangent is x/y, so cot pi/6 is sq. root of 3, cot 3pi/2 is also 0. Use a calculator for the last three, it's not hard. Just plug it in.

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