what is sin B?
A. 6/7.81 C. 5/7.81
B. 5/6 D. 7.81/6
what is cos B?
A. 6/7.81 C.5/7.81
B. 5/6 D. 6/5
what is tan B?
A. 7.81/5 C. 5/7.81
B. 5/6 D.6/5
