Vocabulary
Sin/Cos/Tan
Inverse Sin/Inverse Cos/ Inverse Tan
Special Right Triangles
Tell me words
100
This trig function is used when you know the opposite sise of and angle and the hypotenuse of a right triangle.
What is sine or inverse sine?
100
The sine of angle A.
What is
10/26 = 5/13 = 0.38 ?
100
The measure of angle A
What is 23 degrees?
100
The side length of AB
What is 2?
100
A triangular roof has an angle of elevation of 35° at the base. The horizontal distance from the edge of the roof to the peak is 20 feet. How high is the peak of the roof?
What is 14 feet?
200
This trig function is used when you know the adjacent side of and angle and the hypotenuse of a right triangle.
What is cosine or inverse cosine?
200
The cosine of angle C.
What is
10/26 = 5/13 = 0.38 ?
200
The measure of angle C
What is 67 degrees?
200
The side length of AC
What is
2 sqrt(2) ?
200
A ramp is used to load suitcases on an airplane. If the cargo door is 7 feet from the ground and the angle formed by the end of the ramp and the ground is 25°, how long is the ramp?
T
What is 16.6 feet.
300
This trig function is used when you know the opposite side of and angle and the adjacent side of the same angle of a right triangle.
What is tangent or inverse tangent?
300
The tangent of angle A
What is
10/24 = 5/12 = 0.42 ?
300
The measure of angle A and angle B
What is 28 degrees (A) and 62 degrees (B)?
300
The side length of CB and AB in simple radical form
What is AB: 6 and CB:
3 sqrt(3) ?
300
A lifeguard is sitting on a platform, looking down at a swimmer in the water. If the lifeguard’s line of sight is 8 feet above the ground and the angle of depression to the swimmer is 18°, how far away is the swimmer from the lifeguard?
What is 24.6 feet?
400
In this right triangle the side lengths have the relationship of x and
x sqrt(2)
What is a 45-45-90 right triangle?
400
The sine, cosine and tangent of angle A.
What is 8/17 = 0.47 (sine), 15/17 = 0.88 (cosine), and 8/15 = 0.53 (tangent)?
400
The measure of angle B
What is
sin^-1(x/z);cos^-1(y/z);tan^-1(x/y) ?
400
The side length of AC and BC
What is
3 sqrt(2) ?
400
Find the missing side lengths and angles in the right triangle below. Side lengths are rounded to the nearest hundredth, and angles are measured to the nearest degree.
What is 54 degrees (angle C), 8.65 (AC), and 5.09 (BC)?
500
In this right triangle the side lengths have the relationship of x, 2x and
x sqrt(3)
What is a 30-60-90 right triangle?
500
The sine, cosine and tangent of angle A and angle B
What is y/z (sine), x/z (cosine) and y/x (tangent) for angle A and x/z (sine), y/z (cosine) and x/y (tangent) for angle B?
500
The measure of angle A
What is
sin^-1(y/z);cos^-1(x/z);tan^-1(y/x) ?
500
The side lengths of AB and AC
What is
CA = 2 sqrt(3) and AB = 4 sqrt(3) ?
500
Find the missing side lengths and angles in the right triangle below. Side lengths are rounded to the nearest hundredth and angles are measured to the nearest degree.
What is 71 degrees (angle C), 19 degrees (angle B), and 14.14 (AB)?