ACT MATH · Trigonometry Basics · Standard

Trigonometry Basics: If math and math is acute, find math.

SOH-CAH-TOA, unit circle values.

Try the problem

If tan⁡θ=34\tan\theta=\frac34 and θ\theta is acute, find cos⁡θ\cos\theta.

Hint and answer

Concept to use

Special angles on unit circle.

Hint

Use a 3-4-5 triangle.

Answer

4/5

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