Lesson 340 minutes
Sine, Cosine, and Tangent Ratios
Mathematics • Trigonometry I
📚 Curriculum Context
This lesson implements: NCDC S3 Mathematics - Topic 1: Trigonometry I
View Full Curriculum GuidanceOverview
Learners are introduced to the three fundamental trigonometric ratios: sine (opposite/hypotenuse), cosine (adjacent/hypotenuse), and tangent (opposite/adjacent), using the SOH-CAH-TOA memory aid to calculate ratios from given triangle measurements.
Lesson Details
- Subject:
- Mathematics
- Grade:
- S3
- Term:
- Term 1
- Topic:
- Trigonometry I
- Lesson:
- 3 of 15
- Duration:
- 40 minutes
Curriculum Reference
NCDC Lower Secondary Mathematics Syllabus (2019), S3 Topic 1 (Trigonometry I)
Keywords
sinecosinetangentSOH-CAH-TOAtrigonometric ratiosright trianglecalculations
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