Chapter 7: Further Trigonometry (Formula)

Question 1

The Formula for Sine rule

Answer 1

sinA/a = sinB/b = sinC/c

Question 2

The formula for Cosine rule

Answer 2

c² = a² + b² - 2ab cosC

Question 3

The formula of area of any triangle

Answer 3

½absinC

Question 4

The formula for Sine Function

Answer 4

sinθ = sin(180° - θ)

Question 5

The formula for Cosine Function

Answer 5

cosθ = -cos(180° - θ)