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 one year ago
Use a halfangle identity to find the evact value of each function.
A.) Tan 165 degrees
I have tried and cannot come up with the right answer. Can I have some help?
 one year ago
Use a halfangle identity to find the evact value of each function. A.) Tan 165 degrees I have tried and cannot come up with the right answer. Can I have some help?

This Question is Closed

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0Exact not evact sorry

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.12*165º = 330º = 360º  30º Reference Angle 30º

exraven
 one year ago
Best ResponseYou've already chosen the best response.1\[\tan \left( \frac{x}{2} \right) = \frac{\sin x}{1 + \cos x}\] plug x = 330º

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0i did that, and i checked the answer in the back and it did not go right. I messed up somewhere but i do not know where.

exraven
 one year ago
Best ResponseYou've already chosen the best response.1maybe you forgot to rationalize the denominator?

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1Did you consider the quadrant? 330º is Quadrant IV (Tangent is Negative). 165º is Quadrant II (Tangent is negative) Please show your work and we'll be able to see where you wander off.

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0dw:1357957749155:dw

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1@exraven wins. Just rationalize the denominator!

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0how do you do that?

exraven
 one year ago
Best ResponseYou've already chosen the best response.1multiply by the conjugate

exraven
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{1}{2 +\sqrt{3}}\]multiply by \[\frac{2 \sqrt{3}}{2  \sqrt{3}}\]

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0the answer is square root 3 minus 2 in the book. I cannot quite get it to match

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1Again, let's see your work. We'll be able to tell where you wander off.

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0dw:1357958794041:dw

exraven
 one year ago
Best ResponseYou've already chosen the best response.1yes, what is the value of square root of 9?

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1That's it. Don't panic that it does not yet match the book. Keep going!

haleyking345
 one year ago
Best ResponseYou've already chosen the best response.0dw:1357959061747:dw
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