Question

(cos(П-t)+cos(П/2-t))/(sin(2П-t)-sin(3П/2-t))=

Answer 1

$frac{cos( pi -t)+cos( frac{ pi }{2}-t) }{sin(2 pi -t)-sin( frac{3 pi }{2}-t )} = frac{-cost+sint}{-sint+cost}=- frac{cost-sint}{cost-sint} =-1$