# GRAPHS OF TRIGONOMETRIC RATIOS

CONTENT

1. Graphs of:

(i) Sine $$0^o ≤ x ≤ 360^o$$

(ii) Cosine $$0^o ≤ x ≤ 360^o$$

2. Graphical solution of simultaneous linear and trigonometric equations.

THE GRAPH OF $$y = \text{Sine } 0^o ≤ x ≤ 360^o$$ The graph of $$y = sin θ$$ is drawn by considering the table of values for $$sin θ$$ from $$θ = 0^o$$ to $$θ = 360^o$$at intervals of $$90^o$$ as shown in the table below.

$$θ$$ 0o 90o 180o 270o 360o
$$y = sin θ$$ 0 1 0 -1 0

THE GRAPH OF $$Y= cos θ$$ for $$0^o < θ^o < 360^o$$

The graph of $$y = cos θ$$ is also drawn by considering the table of values for $$cos θ$$ from $$θ = 0^o$$ to $$θ = 360^o$$at intervals of $$90^o$$as shown in the table below.

Lesson tags: General Mathematics Lesson Notes, General Mathematics Objective Questions, SS3 General Mathematics, SS3 General Mathematics Evaluation Questions, SS3 General Mathematics Evaluation Questions Second Term, SS3 General Mathematics Objective Questions, SS3 General Mathematics Objective Questions Second Term, SS3 General Mathematics Second Term
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