Question

Given that cos0= -4/5. and the angle 0 is in quadrant two, find the value for sin 0

Answer 1

i use "a" for angle, or "t" to avoid having to try to decipher the greek stuff ....

Answer 2

it might help to draw out the triangle that corresponds to it

Answer 3

or, use the pythag trig identitiy

sin^2+cos^2 = 1

Answer 4

So i am getting 3/5

Answer 5

I am horrible with math and I am having my fiend try to help me and we are clueless about geommetry

Answer 6

@amistre64

Answer 7

3/5 seems reasonable to me