Textbook
Chapter 1: Indices
Chapter 2: Standard Form
Chapter 3: Consumer Mathematics: Savings and Investments, Credit and Debt
Chapter 4: Scale Drawings
Chapter 5: Trigonometric Ratios
Chapter 6: Angles and Tangents of Circles
Chapter 7: Plans and Elevations
Chapter 8: Loci in Two Dimensions
Chapter 9: Straight Lines
Chapter 5: Trigonometric Ratios
Sine, Cosine and Tangent of Acute Angles in Right-angled Triangles
Perform calculations involving sine, cosine and tangent
Identify the opposite side and adjacent side based on an acute angle in a right-angled triangle
Solve problems involving sine, cosine and tangent
Determine the values of sine, cosine and tangent of 30 degree, 45 degree and 60 degree angles without using a calculator
Determine the values of sine, cosine and tangent of acute angles
Make and verify the conjecture about the impact of changing the size of the angles on the values of sine, cosine and tangent
Make and verify the conjecture about the relationship between acute angles and the ratios of the sides of right-angled triangles, and hence define sine, cosine and tangent
Quiz Battle
Challenge your friend in timed Quiz battle
Learn more »