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

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

qpHalcy0n
 2 years ago
Best ResponseYou've already chosen the best response.1So 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
 2 years ago
Best ResponseYou've already chosen the best response.0Oh so you know o and a, you just need to find the h, and you can solve it :P

qpHalcy0n
 2 years ago
Best ResponseYou've already chosen the best response.1Lets see what ya got when ya get it.

hawkfalcon
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ 3 }{ \sqrt{13}}\]

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