Unit Test — Unit test

Question 1

The graph of is the graph of the y = cos(x) shifted in which direction?

Revolt · Accepted Answer

units to the left

Question 2

Which function is graphed below?

Revolt · Accepted Answer

f(x) = cos(x)

Question 3

Which equation can be used to solve for x in the triangle below?

Revolt · Accepted Answer

x squared equal to 4 point 7 squared plus 4 point 0 squared - 2 (4.7) (4.0) cosine 41 degree.

Question 4

A 15-foot flagpole leans slightly, such that it makes an 80° angle with the ground. The shadow of the flagpole is 10 feet long when the sun has an unknown angle of elevation. How could the angle of elevation of the sun, x, be determined?

Revolt · Accepted Answer

by determining the length of TV using , and then determining the value of x using

Question 5

Kim drew the diagram below to find x, the length of the pole holding up the stop sign that is at an angle with the ground as shown.The pole casts a 12-foot shadow when the sun is at a 40° angle of elevation. Which equation could Kim use to find x, the length of the pole?

Revolt · Accepted Answer

StartFraction sine 40 over x EndFraction equal to StartFraction sine 60 over 12 EndFraction.

Unit Test — Unit test Answers

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