Trigonometry Handout

Trigonometry
15
9. If cos p = and sin p < 0. Find cot p
17
15
10. If cos p = and sin p < 0. Find csc p
17
11. The period of the function y = 15sec(7t)
is?
12. The period of the function y = 13 cos(11t
+ 15)
is?
13. The radius of the wheels of your car measure 27 cm. Suppose that each wheel is
rotating at 964 rpm. Find the speed of your car in km/h. Round your answer to the
nearest tenth.
14. The rectangle below has a diagonal AC = 31cm. The angle θ = 27 . How many
square centimeters are in the area of the rectangle. Picture not to scale.
D
C
o
A
θ
B
5
15. If sin p = , find sin( π − p)
.
7
16. What are the solutions of 2sin + sin a −1
= 0
17. What are the solutions of 2sin b − 9sinb + 4 = 0 ?
2
2
a in the interval ( 2π ,0)
− ?
18. Find
−
⎛ 3 ⎞
sin 1 ⎜ ⎟
−
.
⎝ 2 ⎠
19. Find sec − 1 (2)
.
o
20. Erin wishes to measure the distance across Eagle River. She find that C = 102 ,
o
A = 25 and b = 345 feet. Find the required distance. Round your answer to the nearest
foot.
A
b
B
a
C
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