Find cos theta, given that sin theta=3/5 and theta is in quadrant II
2 answers
batangas state university must be a fascinating School Subject, but we have no tutors here who specialize in that subject. If you want calculus or trigonometry, we might have a tutor for those subjects.
sinØ = 3/5 , Ø in II
make a sketch of the corresponding right-angled triangle to see that y = 3, r = 5
x^2 + 3^2 = 5^2
x = ± 4, but we are in II , so x = -4
cosØ = -4/5
make a sketch of the corresponding right-angled triangle to see that y = 3, r = 5
x^2 + 3^2 = 5^2
x = ± 4, but we are in II , so x = -4
cosØ = -4/5
2 answers