Select the correct answer.
length of QR is 9
length of RS is 15
length of QS is 11
Which expression gives the area of triangle QRS?
A. 1/2(11)(15) sin(20 degrees)
B. 1/2(9)(15) cos(20 degrees)
C. 1/2(9)(15) sin(20 degrees)
D. 1/2(11)(15) cos(20 degrees)
1 answer
C. 1/2(9)(15) sin(20 degrees)