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Chapter 8 Trigonometric Equations (TE)
Objectives
How can we use trigonometry to solve equations and understand arbitrary triangles?
By the end of this chapter, you should be able to...
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Use the sum and difference, the double-angle, and power-reducing formulas for cosine, sine, and tangent and the Pythagorean identities.
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Symbolically verify identities by using various trig identities.
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Find all solutions to a trigonometric equation.
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Use trigonometric functions and the Pythagorean Theorem to solve right triangles.
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Use the law of sines and/or the law of cosines to solve non-right triangles.
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Solve applications that require the use of trigonometry to find a side or angle.
Readiness Assurance.
Before beginning this chapter, you should be able to...
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Identify whether a trigonometric function is positive or negative in a given quadrant.
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Determine the relationships between the angles and sides of a triangle.
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Use trigonometric relationships to find values of other trigonometric functions.
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Solve quadratic equations.
