Trigonometry
Angles in exact value right triangles
Interactive practice questions
Given that $\sin\theta=\frac{1}{2}$sinθ=12, we want to find the value of $\cos\theta$cosθ.
a
First, find the value of $\theta$θ.
b
Hence, find the exact value of $\cos30^\circ$cos30°.
Easy
1min
Given that $\sin\theta=\frac{1}{2}$sinθ=12, we wish to find $\tan\theta$tanθ.
Easy
1min
Given that $\cos\theta=\frac{\sqrt{3}}{2}$cosθ=√32, we want to find the value of $\sin\theta$sinθ.
Easy
1min
Given that $\cos\theta=\frac{1}{2}$cosθ=12.
Easy
< 1min
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