Introduction to Trigonometry

Jul 1, 2026 · 1 min read · 0 views

What is Trigonometry?

Trigonometry studies the relationship between the sides and angles of a triangle, especially the right-angled triangle.

Three Basic Ratios

Sine: opposite divided by hypotenuse.
Cosine: adjacent divided by hypotenuse.
Tangent: opposite divided by adjacent.

Memory Tip

Remember SOH CAH TOA to recall the three ratios.

Key Points

Trigonometry is used in construction, navigation and physics.

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