Solving Trigonometric Equations - Concept

Concept Concept (1)

When solving trigonometric equations, we find all the angles that make the equation true. If there is no interval given, use periodicity to show the infinite number of solutions. Two ways to visualize the solutions are (1) the graph in the coordinate plane and (2) the unit circle. The unit circle is the more useful of the two in obtaining an answer.

Sample Sample Problems (3)

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Solving Trigonometric Equations - Problem 1
Problem 1
How to solve a simple cosine equation: cos x = - square root(2)/2.
Solving Trigonometric Equations - Problem 2
Problem 2
How to solve a simple tangent equation: tan(x/4)=1.
Solving Trigonometric Equations - Problem 3
Problem 3
How to solve a simple trig equation involving secant.