Solving for Angle Measures of Right Triangles — Unit test Answers
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Triangle G E F is shown. Angle G E F is a right angle. The length of hypotenuse F G is 14.5 and the length of F E is 11.9. Angle B F E is theta.
A
cos−1 = θ
B
cos−1 = θ
C
sin−1 = θD
sin−1 = θ22
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Triangle A B C is shown. Angle A C B is a right angle. The length of hypotenuse A B is 13, the length of C B is 12, and the length of A C is 5. Angle C A B is x.
A
tan−1 = x
B
tan−1 = x
C
cos−1 = x
D
cos−1 = x
23
The longest side of an acute isosceles triangle is 12 centimeters. Rounded to the nearest tenth, what is the smallest possible length of one of the two congruent sides?
6
6.0 cm6
6.1 cm8
8.4 cm8
8.5 cm25
In which triangle is the value of x equal to cos−1? (Images may not be drawn to scale.)
A
A right triangle is shown. The length of the hypotenuse is 6.7 and the length of another side is 4.3. The angle between the 2 sides is x.
B
A right triangle is shown. The length of the hypotenuse is 6.7 and the length of another side is 4.3. The angle opposite to side with length 4.3 is x.
C
A right triangle is shown. The length of the hypotenuse is 4.3 and the length of another side is 6.7. The angle between 2 sides is x.
D
A right triangle is shown. The length of the 2 sides are 6.7 and 4.3. The angle opposite to side with length 4.3 is x.
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