hawkfalcon
Find cos(theta) if tan(theta) = (2/3) and sin(theta) > 0



This Question is Closed

hawkfalcon
Best Response
You've already chosen the best response.
0
Find \[\cos \theta if \tan \theta = 2/3 and \sin \theta >0\]

qpHalcy0n
Best Response
You've already chosen the best response.
1
Here, you know that the tangent is opp/adjacent. Since the sine is positive, it must be in either the first or second quadrant right?

hawkfalcon
Best Response
You've already chosen the best response.
0
Yes.

qpHalcy0n
Best Response
You've already chosen the best response.
1
So the opposite leg must be positive, therefore since the tangent is negative the adjacent leg must be the negative one. So what quadrant is that?

hawkfalcon
Best Response
You've already chosen the best response.
0
Oh so you know o and a, you just need to find the h, and you can solve it :P

qpHalcy0n
Best Response
You've already chosen the best response.
1
Yep.

qpHalcy0n
Best Response
You've already chosen the best response.
1
Lets see what ya got when ya get it.

hawkfalcon
Best Response
You've already chosen the best response.
0
Thats 2nd quad

hawkfalcon
Best Response
You've already chosen the best response.
0
Okay:)

qpHalcy0n
Best Response
You've already chosen the best response.
1
Yep.

hawkfalcon
Best Response
You've already chosen the best response.
0
\[\frac{ 3 }{ \sqrt{13}}\]

qpHalcy0n
Best Response
You've already chosen the best response.
1
Thats it.

hawkfalcon
Best Response
You've already chosen the best response.
0
:D thank you!

qpHalcy0n
Best Response
You've already chosen the best response.
1
No prob.

Yasir_se
Best Response
You've already chosen the best response.
0
\[\frac{ x \sqrt{\left x ^{2}4 \right} }{ x ^{2}4 }1>0\]

hawkfalcon
Best Response
You've already chosen the best response.
0
@Yasir_se wtf?