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8.01 Right triangles

Interactive practice questions

Evaluate the following expression, writing your answer correct to 2 decimal places.

$\sin69^\circ$sin69°

Easy
< 1min

If $\cos\theta=0.146$cosθ=0.146, find $\theta$θ, writing your answer to the nearest degree.

Easy
1min

If $\sin\theta=0.825$sinθ=0.825, find $\theta$θ, writing your answer to the nearest degree.

Easy
< 1min

If $\cos\theta=1$cosθ=1, find $\theta$θ.

Easy
< 1min
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Outcomes

2.1.1.1

review the use of the trigonometric ratios to find the length of an unknown side or the size of an unknown angle in a right-angled triangle

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