4. What is the sum of trigonometric ratios Cos 16 and Cos 74?
A. 0.276
B 0.961
C. 1.237
D. 1.922



5. In triangle ABC , Tan angle A=3/4 . The hypotenuse of triangle ABC is
A 3
B 4
C. 5
D. 9

6. In triangle ABC , Sin angle B=14/17 . The hypotenuse of triangle ABC
A. 14
B17
C. 2sqrt(485 )
D. 0.824

7. In triangle ABC , Cos angle C=22/36 . The hypotenuse is
A, 22
B. 36
C.0.611
D. 2sqrt(445) ​