Chapter 6: Trigonometry (Principle/Law)

Question 1

When do we use Trigonometric ratios or Pythagoras Theorem?

Answer 1

We use those for Right-Angled Triangles

Question 2

Principle/Law of the use of formulas in a right-angled triangle to find the unknown

Answer 2

When the triangle is right-angled, or where there is a right-angled triangle, we use Pythagoras Theorem or Trigonometric Ratios to find the unknown in the right-angled triangle.

Question 3

We use Trigonometric ratios if the right-angled triangle states or have found:

Answer 3

length of any one side and one angle

or

have lengths of two sides

Question 4

We use Pythagoras Theorem if the right-angled triangles states or have found:

Answer 4

2 lengths.