Geometry and Measures

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Trigonometry: Sine, Cosine, Tangent

Geometry and Measures Trigonometry: Sine, Cosine, Tangent

🎬 Video Tutorial

  • Sine, Cosine, and Tangent in Right Triangles
  • Using Sine, Cosine, and Tangent to Determine Missing Sides
  • Using Inverse Sine, Cosine, and Tangent to Determine Missing Angles

📂 Revision Cards

Definitions, ratios, and visuals of sine, cosine, and tangent shown in a right triangle.
A right triangle with 30° angle, opposite side 4 cm. Using the ratio of sin 30°, solve the hypotenuse, which is 8 cm.
The application of using tangent to find the missing side of a right triangle with a 50-degree angle and a known side of 5 cm.
Finding the angle using cosine in a right triangle with sides 4 cm and 8 cm, showing the calculation cos ? = 1/2 and ? = cos?¹(1/2) = 60°.
Common values of sine, cosine, and tangent for 30°, 60°, and 45° with right triangles and ratios.

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