Simple Trigonometric Equations Examples
Examples

Example 1


Example 1: Question

Solution

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Solution: θ ∈ { 225°, 315° }


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Solution: θ ∈ { 225°, 315° }


Dotted Line

Example 2


Example 2: Question

Solution

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Example 2: Solution

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Example 2: Solution

Dotted Line

Example 3


Solve: tan(θ) = -2,  0° ≤, θ, < 360°    (Round solutions to the nearest degree)


Solution

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Solution: θ ∈ { 117°, 297° }