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WorksheetsFinding Missing Angles and Using Ratios in Triangles
Total questions: 20
Worksheet time: 20mins
Find the measure of the missing angle.
90o
100
130o
50o
Solve for x.
16
11
50
6
If two of the angles of a triangle are 30 and 70 degrees, the third angle measures...
80
100
60
90
What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?
32
39
45
54
What do the angles in an equilateral triangle measure?
30, 60, 90
45, 45, 90
60, 60, 60
35, 55, 90
Find the missing angle. Find x.
20o
70o
160o
180o
Choose the correct technique to find the missing angle (theta = θ)
Pythagoras Theorem
Trigonometry Ratio
Sine Rule
Cosine Rule
Based on the math work in the picture, what problem has been solved?
Finding a side using sine rule
Finding an angle using sine rule
Finding a side using cosine rule
Finding an angle using cosine rule
What is the cosine rule used for in non-right triangles?
To calculate the area of non-right triangles.
The cosine rule is used to find unknown sides or angles in non-right triangles.
To determine the perimeter of any triangle.
To find the height of a triangle.
Choose the correct technique to find the missing side of this triangle
Pythagoras Theorem
Trigonometry Ratio
Sine Rule
Cosine Rule
What is the tangent ratio in a right triangle?
tangent = opposite / adjacent
tangent = adjacent / hypotenuse
tangent = opposite / hypotenuse
tangent = hypotenuse / adjacent
The Sine Rule requires which of the following to solve for a side or an angle?
Two angles and one side.
All the sides and a 90˚ angle.
Only a pair of angle and its opposite side.
Two sides with an angle in between.
What are the techniques that you need to find the missing side?
Trigonometry Ratios and Sine Rule
Trigonometry Ratios and Cosine Rule
Pythagoras and Sine Rule
Pythagoras and Cosine Rule
Q1. What is the temperature?
1) 41°
A) 65°
2) 102°
3) 115°
Find the measure of the missing angle.
47
57
53
133
Find the measure of the missing angle.
139°
66°
138°
116°
A triangle's angles add up to...
90 Degrees
180 Degrees
360 Degrees
OVER 9000 Degrees
Name the angles from LARGEST to SMALLEST
R, S, T
S, T, R
S, R, T
T, S, R
