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Solving trigonometric equations using sum and difference identities
Try reviewing these fundamentals first
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Review these basic concepts…
Reference angle
Find the exact value of trigonometric ratios
ASTC rule in trigonometry (All Students Take Calculus)
Sum and difference identities
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Get Started NowChapter 19.16 Playlist
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Chapter 19 Topics:

19.1
Solving first degree trigonometric equations

19.2
Determining nonpermissible values for trig expressions

19.3
Solving second degree trigonometric equations

19.4
Solving expressions using 454590 special right triangles

19.5
Solving expressions using 306090 special right triangles

19.6
Find the exact value of trigonometric ratios

19.7
ASTC rule in trigonometry (All Students Take Calculus)

19.8
Sine graph: y = sin x

19.9
Cosine graph: y = cos x

19.10
Tangent graph: y = tan x

19.11
Cotangent graph: y = cot x

19.12
Secant graph: y = sec x

19.13
Cosecant graph: y = csc x

19.14
Solving trigonometric equations involving multiple angles

19.15
Solving trigonometric equations using pythagorean identities

19.16
Solving trigonometric equations using sum and difference identities

19.17
Solving trigonometric equations using doubleangle identities

19.18
Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ )

19.19
Using cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ )

19.20
Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$)

19.21
Combination of SohCahToa questions

19.22
Pythagorean theorem

19.23
Unit circle

19.24
Sine law

19.25
Cosine law

19.26
Word problems relating ladder in trigonometry

19.27
Word problems relating guy wire in trigonometry

19.28
Other word problems relating angles in trigonometry
Don't just watch, practice makes perfect.
Do better in math today
Chapter 19 Topics:

19.1
Solving first degree trigonometric equations

19.2
Determining nonpermissible values for trig expressions

19.3
Solving second degree trigonometric equations

19.4
Solving expressions using 454590 special right triangles

19.5
Solving expressions using 306090 special right triangles

19.6
Find the exact value of trigonometric ratios

19.7
ASTC rule in trigonometry (All Students Take Calculus)

19.8
Sine graph: y = sin x

19.9
Cosine graph: y = cos x

19.10
Tangent graph: y = tan x

19.11
Cotangent graph: y = cot x

19.12
Secant graph: y = sec x

19.13
Cosecant graph: y = csc x

19.14
Solving trigonometric equations involving multiple angles

19.15
Solving trigonometric equations using pythagorean identities

19.16
Solving trigonometric equations using sum and difference identities

19.17
Solving trigonometric equations using doubleangle identities

19.18
Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ )

19.19
Using cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ )

19.20
Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$)

19.21
Combination of SohCahToa questions

19.22
Pythagorean theorem

19.23
Unit circle

19.24
Sine law

19.25
Cosine law

19.26
Word problems relating ladder in trigonometry

19.27
Word problems relating guy wire in trigonometry

19.28
Other word problems relating angles in trigonometry
Don't just watch, practice makes perfect.
Solving trigonometric equations using sum and difference identities
Lessons

1.
Utilizing "Sum and Difference Identities" to solve:
Solving trigonometric equations using sum and difference identities
Don't just watch, practice makes perfect.
We have 1107 practice questions in Algebra 2 for you to work through.