If cos(t)=−9/11 where pi
cos(2t) =
sin(2t)=
cos(t/2)=
sin(t/2)=

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1