Questions 14-16: Use the triangle to calculate the specified trigonometric values.

14.Calculate sin

a. 7/ square root of 13

b. 6/ square root of 13

c. 6/ square root of 85

d. 7/ square root of 85

15.Calculate cos

a. 7/ square root of 13

b. 6/ square root of 13

c. 6/ square root of 85

d. 7/ square root of 85

16.Calculate tan

a. 7/ square root of 13

b. 6/ square root of 13

c. 6/ square root of 85

d. 7/ square root of 85

17. If tan=5/4 calculate the value of cos

a. 5/ square root of 41

b. 4/ square root of 41

c. 5/3

d. 4/3

18. If cos= 2xsquare root of 10/7 calculate the value of sin.

a. 3/7

b. square root of 29/7

c. square root of 69/7

d. square root of 89/7

19. If sin= 1/ square root of 2 find the value of 0.

a. 30º

b. 45º

c. 60º

d. 90º

Questions 20-22: Use a calculator to find the trigonometric value to four decimal places.

20. cos 88º =

a. 0.0354

b. 0.0114

c. 0.9994

d. 0.0349

21. sin 47º =

a. 0.7314

b. 0.6820

c. 0.1236

d. 1.0734

22. tan 8º =

a. 6.7997

b. 0.1405

c. 0.1392

d. 5.6713