How to solve it:
Given cos 6 theta = 4/5, P 6 theta is in Q1, tan 6 theta = ?

a) 3/4
b) 4/3
c) - 3/4
d) - 4/3

Question

How to solve it:
Given cos 6 theta = 4/5, P 6 theta is in Q1, tan 6 theta = ?

a) 3/4
b) 4/3
c) - 3/4
d) - 4/3

myininaya · Answer

what does the P mean?

myininaya · Answer

I will leave you with the following:
|dw:1388491733745:dw|
Find tan(6theta) using the above picture

tomektomeknyc · Answer

Ok , thank you, i am not sure about P

myininaya · Answer

So P is certainly there in the problem?
It made no sense to me to include it so I didn't.

myininaya · Answer

do you know how to find tan(6*theta) using the pic above?

tomektomeknyc · Answer

I will need to use one of the formulas that allow to calculate tan if I have cos given, or to calculate the third angle from Pythagorean  theorem and then use it to calculate tan

myininaya · Answer

the third side 
and you will use the definition from tan which is opp over adj, right?

tomektomeknyc · Answer

right

tomektomeknyc · Answer

Thank you very much for your help

myininaya · Answer

np

haseeb96 · Answer

|dw:1388539331469:dw|
|dw:1388539436553:dw|
the answer is tan6 theta =  3\4