Trigonometric Functions

A Block Data

B Block Data

E Block Data

Each ratio (O/H, A/H, O/A) per individual groups (angles) is the same regardless of the size of the triangle. As the angle increases, the ratio of O/H increases. As the angle increases, the ratio of A/H decreases. As the angle increase, the ratio of O/A greatly increases. The ratio of O/H and A/H sometimes is similar. Trends:

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Calculator Zoom In Hit the ‘sin’ button Type in ’10’ Hit ‘enter’

Calculator sin (10) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘sin’ button Type in ’20’ Hit ‘enter’

Calculator sin (20) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘sin’ button Type in ’30’ Hit ‘enter’

Calculator sin (30) = 0.5 Does this number appear on our spreadsheet anywhere?

What does this mean? Ɵ H O A The ratio of the opposite side length divided by the hypotenuse side length is equal to the sin of the reference angle.

Calculator Zoom In Hit the ‘cos’ button Type in ’10’ Hit ‘enter’

Calculator cos (10) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘cos’ button Type in ’20’ Hit ‘enter’

Calculator cos (20) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘cos’ button Type in ’30’ Hit ‘enter’

Calculator cos (30) = Does this number appear on our spreadsheet anywhere?

What does this mean? Ɵ H O A The ratio of the adjacent side length divided by the hypotenuse side length is equal to the cos of the reference angle.

Calculator Zoom In Hit the ‘tan’ button Type in ’10’ Hit ‘enter’

Calculator tan (10) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘tan’ button Type in ’20’ Hit ‘enter’

Calculator tan (20) = Does this number appear on our spreadsheet anywhere?

Calculator Zoom In Hit the ‘tan’ button Type in ’30’ Hit ‘enter’

Calculator tan (30) = Does this number appear on our spreadsheet anywhere?

What does this mean? Ɵ H O A The ratio of the opposite side length divided by the adjacent side length is equal to the tan of the reference angle.

Trigonometric Functions Ɵ H O A SOH CAH TOA