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 2 years 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?
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0Exact not evact sorry

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

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

tkhunny
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357957749155:dw

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

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

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

exraven
 2 years 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
 2 years 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
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357958794041:dw

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

tkhunny
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357959061747:dw
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