Question

Two problems:
http://prntscr.com/95ppef

Hey, you help and I will medal. Please?

Answer 1

@phi ?

Answer 2

can you draw a triangle in quadrant III ?

Answer 3

ok

Answer 4

the sqrt5 is negative sorry

Answer 5

I'm using the formula here: http://prntscr.com/95t5an

Answer 6

but I got stuck ^^;

Answer 7

sin = opp/hyp
so the hyp is 3
and one leg is 1 (ignoring the signs for the time being)
a^2 + b^2 = c^2
1^2 + b^2 = 9
b^2= 9-1= 8
b= sqrt(8) = 2 sqrt(2)

Answer 8

leg is one?? o_o

Answer 9

normally when we draw the triangle, we *always* use the x-axis as part of the leg
so it would look like this