Hey this question above.

my working out

tan theta= 1/cot theta = cos theta/ sin theta

tan theta= cos ( -7/24) / sin(-7/24)

cos theta=0.957766

sin theta= -0.287549 or 0.29

the back of the book says

cos theta - 24/25, thats correct

but sin theta=-7/25 which equals -0.28

help?

thanks