Year 10
Higher
Applying Trigonometry
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Lesson details
Key learning points
- In this lesson, we will apply and manipulate the full compliment of trigonometric ratios to solve missing length triangle problems.
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4 Questions
Q1.
Solve the equation to 2 decimal places
x = 0.19
x = 4.70
Q2.
Find the length of y, to 3 significant figures
0.16 m
1.59 m
6.10 m
Q3.
Here is a right-angled isosceles triangle. Find the length AC to 2 decimal places.
0.14 cm
3.5 cm
7.07 cm
Q4.
4. Find the radius of this circle, to 3 significant figures. xy = 5.5 cm and angle xyz = 40
3.89 cm
7.18 cm
7.78 cm
3 Questions
Q1.
A ladder leans against a wall. It is 3m away from the wall at an angle of 60 degrees. What is the length of the ladder?
x = 1.5 m
x = 4.70 m
Q2.
2. A man stands exactly 8m from a lamppost. He looks to the top of the lamppost, as shown. What is the height of the lamppost? Answer to 1 dp
11.9 m
13.4 m
5.4 m
Q3.
Find the perpendicular height of this parallelogram to 1 decimal place
10 cm
3.5 cm
3.54 cm