Unit 5/8 Test

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1. What is the definition of "cosine"?
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Unit 5/8 Test - Quiz

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2. What is the definition of  "tangent"?
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3. What is the definition of "sine"?
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4. Find the unknown side length.  Round answer to the nearest hundredth if necessary.
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5. Cos 23 =
(answer correct to 2 decimal places)

Explanation

make sure that your calculator is in the correct mode

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6. If a = 7 and c = 25, b = ?
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7. A triangle with sides length of 16, 30, and 34 units is a right triangle.
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8.
Find x.

Explanation

This is a special triangle (why?)
The ratios of sides of a 45-45-90 triangle are x-x-x*sqrt(2).

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9. If the side lengths of a triangle are 7, 6, and 9, the triangle is _____.   
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10. Which equation would best help solve for x?
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11. If  b = 15 and c = 24, a = ?   (Round answer to the tenth)
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12. Evaluate x if 

cos x =0.156

(correct to the neearest degree)
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13. In the diagram below, buildings P and Q are 50m apart. The angle of elevation of T from R is 53° and the angle of depression of V from R is 41°. Determine the height TV of building Q?
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14. A triangle with sides length of 7, 24, and 25 units is a right triangle.
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15. One end of  a piece of wire 14 m long is attached to the top of a vertical pole and the other end is attached to the ground at an angle of 70 degrees to the ground.  What is the height of the pole?
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16.

Find x.

Explanation

The ratios of sides of a 45-45-90 triangle are x-x-x*sqrt(2).

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17. In a right angle triangle ABC, AB = 12 m, angle ABC = 90 degrees and angle BAC = 60 degrees. The length of side AC is
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18. In the following triangle, what is sin A = ?

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19. Tan 74o =

(answer to 1 decimal place)

Explanation

make sure that your calculator is in the correct mode

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20. Evaluate x if

tan x = 2.45

(answer correct to 1 decimal place)

Explanation

Make sure that your calculator is in the correct mode!

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21. From the top of a lighthouse 210 feet high, the angle of depression of a boat is 27°. Find the distance from the boat to the foot of the lighthouse. The lighthouse was built at sea level. 
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22. Name (First and Last)

Explanation

-10 deducted no first or last name and a "0" will be received if you didn't use your legal student name

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What is the definition of "cosine"?
What is the definition of  "tangent"?
What is the definition of "sine"?
Find the unknown side length.  Round answer to the nearest...
Cos 23 = (answer correct to 2 decimal places)
If a = 7 and c = 25, b = ?
A triangle with sides length of 16, 30, and 34 units is a right...
Find x.
If the side lengths of a triangle are 7, 6, and 9, the triangle is...
Which equation would best help solve for x?
If  b = 15 and c = 24, a = ?   (Round answer to the...
Evaluate x if cos x =0.156(correct to the neearest degree)
In the diagram below, buildings P and Q are 50m apart. The angle of...
A triangle with sides length of 7, 24, and 25 units is a right...
One end of  a piece of wire 14 m long is attached to the top of a...
Find x.
In a right angle triangle ABC, AB = 12 m, angle ABC = 90 degrees and...
In the following triangle, what is sin A = ?
Tan 74o = (answer to 1 decimal place)
Evaluate x if tan x = 2.45(answer correct to 1 decimal place)
From the top of a lighthouse 210 feet high, the angle of depression of...
Name (First and Last)
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