If $tan A = .3$ $tan A = .3$ and A is in Q1, how do you go about finding sin A and cos A?

Question

2198 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-04-16T19:21:29

If $tan (A) = 0.3$ $tan(A) = 0.3$ and $A$ $A$ is in Q1
(ignore the fact that the image below uses $x$ $x$ instead of $A$ $A$
enter image source here

and
$sin (A) = \frac{3}{\sqrt{109}}$ $sin(A) = 3/sqrt(109)$

$cos (A) = \frac{10}{\sqrt{109}}$ $cos(A) = 10/sqrt(109)$

IftanA=.3 tan A = .3 and A is in Q1, how do you go about finding sin A and cos A?