Question

cos(theta)= 40/41, (theta) lies in Quadrant IV. Find the exact value for each of the following
a. sin2(theta) b. cos2(theta) c. tan2(theta)

Answer 1

they already gave you cthe value for cosine
use
sin^2(x)+cos^2(x) = 1

Answer 2

and the value of theta is between 270 and 360 (quadrant 4)

Answer 3

Yeah, I know but how do you find the exact value for a and c?

Answer 4

hi u r cute

Answer 5

;3

Answer 6

a) sin^2(x) = 1 - cos^2(x) = 1 - (40/40)^2

Answer 7

40/41 i meant to type