GCSE Maths Practice: trigonometry

Question 6 of 10

Find the exact cosine value for 60°.

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\( \begin{array}{l}\text{What is the exact value of } \cos 60^\circ\text{?}\end{array} \)

Choose one option:

Memorize standard exact values for common angles.

Cosine of 60° is exactly 1/2. Memorizing the exact values of sine, cosine, and tangent for 30°, 45°, 60° is essential for solving problems efficiently. Use these values to solve triangle problems without a calculator and to check answers quickly. This forms a foundation for applied trigonometry in construction, navigation, and physics.