Question

Find cos θ if sin θ= -5/13 and tan θ > 0.

Answer 1

choices below:

Answer 2

@Hero @PFEH.1999 @SolomonZelman

Answer 3

use the relation :
\(\Large \sin^2 \theta + \cos^2 \theta =1\)
you have sin, find cos

Answer 4

i have to use Pythagorean theorem though

Answer 5

you can use it too ;) draw a triangle and write WHAT is sin

Answer 6

then make a right triangle,

Answer 7

fill a, b,c using the relation
sin θ= -5/13

Answer 8

Sin= opp/hyp

Answer 9

correct