Question

1. An object is attached to a coiled spring. The object is pulled down (negative direction from the rest position) and then released. Write an equation for the distance of the object from its rest position after t seconds.
amplitude = 17 cm
period = 7 seconds

A.

B.

C.

D.



2. Find the exact value of the expression, if possible. Do not use a calculator.
cos[cos–1(0.6)]

A. 2.5

B. 0.8

C. 3.7

D. 0.6


3. The height of the water in feet, E, at a boat dock t hours after 7 A.M. is given by , where t is time measured in seconds. Find the period.

A.

B.

C.

D.


4. The point P (x,y) on the unit circle that corresponds to a real number t is given. Find the value of the indicated trigonometric function at t.
Find sin t.


A.

B.

C.

D.


5. Find the exact value of the expression below. Do not use a calculator.
1 = sin280° + sin210°

A. 2

B. –1

C. 0

D. 1

Answer 1

1 .options

2.c option is correct ans

3,4.options

5.d is correct ans