Substitute the exact values to find a missing length
Substitute the exact values to find a missing length
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Lesson details
Key learning points
- In this lesson, we will find a missing length of a right angled triangle using prior knowledge of exact trigonometry ratios for 0°, 30°,45°,60° and 90°
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
Which angles of the trigonometry ratios will this triangle help you to find?
0°, 30°,45°,60° and 90°
45°
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Q2.
Which angles of the trigonometry ratios will this triangle help you to find?
0°, 30°,45°,60° and 90°
30° and 60°
Others
Q3.
Find the missing angle in the triangle below.
30°
60°
Others
3 Questions
Q1.
Find the length labelled x without a calculator.
15 mm
50mm
Others
Q2.
Find the length labelled x without a calculator.
6 cm
8√3
Others
Q3.
Find the missing length labelled x without using a calculator.
0.5√3 cm
8 cm
Others