Masters trail · ages 16+
Trigonometry basics practice
Trigonometry links angles and side lengths in right-angled triangles. SOH CAH TOA is the starting point for much of higher maths and physics.
Number Quest's trig questions practise exact values and working out sin, cos and tan from the sides of a right triangle.
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What the questions practise
- Exact values of sin, cos and tan
- Sin, cos and tan from triangle sides
- SOH CAH TOA
Try some example questions
Tap a question to see the answer and how it works.
1. Trig basicsA right triangle has opposite 6, adjacent 8 and hypotenuse 10. What is tan θ?3/54/34/53/4
Answer: 3/4. tan θ = 6/8 = 3/4.
2. Trig basicsA right triangle has opposite 3, adjacent 4 and hypotenuse 5. What is tan θ?3/44/33/54/5
Answer: 3/4. tan θ = 3/4 = 3/4.
3. Trig basicsWhat is tan(0°)?√3/21/201
Answer: 0. tan(0°) = 0.
Tips for parents and teachers
- Label opposite, adjacent and hypotenuse first.
- Remember SOH CAH TOA.
- Practise the exact values often.
Why Number Quest
Free, with no ads and no in-app purchases. Five trails from age 5 to 16+, five ways to play, a daily goal that builds a streak, buddies to unlock and a friendly weekly leaderboard. Questions are made fresh on the device, so there is always something new.
An Android app on Google Play is coming soon. Until then, play free right here in your browser.