For The Law of Sines, ___ must be given.

Two angles and an opposite side

For The Law of Cosines, ___ must be given.

An angle and the two adjacent sides

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Second half of Chapter 5 Trigonometry - CPM Geometry

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Includes: Sine, Cosine, and Tangent Inverse Sine, Cosine, and Tangent Right Triangle Shortcuts Basic Pythagorean Triples Law of Sines Law of Cosines

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Questions 15

Answers

1
True or False: The Law of Sines can be applied to right triangles.
False
True
2
What is the formula for the Law of Cosines?
a2 - b2 + 2(a)b(cosC) = c2
a + b - 2(a2)b2(cosC) = c2
a2 + b2 - 2(a)b(cosC) = c2
a2 + b2 - 2(a)b(sinC) = c2
3
What is the formula for Inverse Cosine?
sin-1 = (tangent/opposite)
sin-1 = (adjacent/hypotenuse)
sin-1 = (sin/hypotenuse
sin-1 = (hypotenuse/adjacent)
4
If a right triangle has a 60° angle and a hypotenuse of 2, what are the other legs?
1, 1
1, √3
1, 2
2, 4
5
Inverse Trigonometry Functions are used to find ___
Sides
Angles
6
If a right triangle has a 45° angle and a hypotenuse of √2, what are the other two legs?
none of the above
4, 3
1, 1
1, 2
7
For The Law of Sines, ___ must be given.
Two angles and an opposite side
An angle and one adjacent side
One angle and no opposite sides
Two sides and an two opposite angles
8
Which one of these is a common Pythagorean triple?
0.1, 0.2, 0.3
3, 4, 5
4, 5, 6
3, 4.5, 5
9
For The Law of Cosines, ___ must be given.
Two angles
An angle and the opposite side
An angle and the two adjacent sides
All three sides and angles
10
What is the formula for Cosine?
Cosine = adjacent/hypotenuse
Cosine = sine/hypotenuse
Sine = hypotenuse/adjacent
Sine = tangent/opposite
11
What is the formula for Sine?
Sine = adjacent/hypotenuse
Sine = opposite/adjacent
Sine = opposite/hypotenuse
Sine = hypotenuse/opposite
12
What is the formula for Tangent?
Tangent = opposite/adjacent
Tangent = adjacent/opposite
Tangent = tangent/adjacent
Tangent = hypotenuse/adjacent
13
What is the formula for Inverse Sine?
Sine-1 = (opposite/hypotenuse)
Sine-1 = (opposite/hypotenuse)
Sine-1 = (hypotenuse/opposite)
Sine-1 = (adjacent/hypotenuse)
14
Which one of these is a common Pythagorean triple?
5, 12, 13
6, 12, 13
11, 12, 13
11.5, 11.6, 11.7
15
What is the formula for Inverse Tangent?
Tan-1 = (opposite/adjacent)
Tan-1 = (cos/-sin)
Tan-1 = (adjacent/opposite)
Tan-1 = (hypotenuse/adjacent)

Second half of Chapter 5 Trigonometry - CPM Geometry Flashcards | StudBud