Trig Ratios
Use Calculator
What is sin 30°?
1/2
What is the sum of angles in a triangle?
1800
Use SOH-CAH-TOA to find opposite side if hypotenuse = 10 and angle = 30°
5
Solve for x:
3:5=x:10
6
Find cos 60°
0.5 or 1/2
Name a triangle with one angle > 90°
obtuse triangle
Find the hypotenuse if one leg is 5 and the other is 12
13
If you are standing on a balcony and look down at an object on the ground, and your eyes tilt downward by 300 from a straight, level line, what is your angle of depression?
300
Use Calculator:
Given sin θ = 0.5, what could θ be?
300
If one angle is 40° and another is 60°, what’s the third?
80°
Find the missing angle if the adjacent is 7 and the hypotenuse is 24.
Approximately 73°
A person looks up at a 600 angle of elevation toward a building 50 feet away. Calculate the height of the building.
approximately 86.60 ft
Calculate tan 45° without a calculator.
1
Which side is longest in a triangle with angles 30°, 60°, 90°?
The side opposite 90° (the hypotenuse)
Solve for the missing side using the Pythagorean theorem in a right triangle with legs 9 and 12.
15
Solve for x:
2x+4=20