Year 10
Higher
Year 10
Higher

Use tangent to find a length

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Lesson details

Key learning points

  1. In this lesson, we will calculate missing lengths using the tangent trigonometric ratio.

Licence

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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4 Questions

Q1.
Has this triangle been correctly labelled?
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Correct answer: No
Yes
Q2.
Why has this triangle been incorrectly labelled?
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Adjacent and opposite need switching
Hypotenuse and opposite need switching
It’s not incorrect
Correct answer: None of these
Q3.
Which is the correct trigonometric ratio to use to calculate length y?
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Cosine
Correct answer: Sine
Tangent
Q4.
Which trig ratio would I use to calculate the diameter of the circle?
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Correct answer: cosine
sine
tangent

4 Questions

Q1.
Solve the equation to 1 decimal place
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x = 10.0
Correct answer: x = 20.0
x = 200.0
x = 28.3
Q2.
Find the length of y, to 3 significant figures
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0.16 m
Correct answer: 2.83 m
6.23 m
Q3.
Find the length AC, to 2 decimal places
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0.14 km
Correct answer: 6.95 km
9.29 km
Q4.
Calculate the perimeter of this rectangle, to 3 significant figures
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15.77 cm
15.8 cm
Correct answer: 31.5 cm
47.3 cm