# Trigonometry Help & Practice

Our Trigonometry tutors have you covered with our complete trig help for all topics that you would expect in any typical Trigonometry classes, whether it's Trigonometry Regents exam (EngageNY), ACT Trigonometry, or College Trigonometry. Learn trig with ease!

Our online trigonometry tutorials walk you through all topics in trigonometry like the Unit Circle, Trigonometric Identities, Trigonometric functions, Right triangle trigonometry, Trigonometric equations, and so much more. Learn the concepts with our trig tutorials that show you step-by-step solutions to even the hardest trigonometry problems. Then, reinforce your understanding with tons of trigonometry practice.

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##### 1Right Triangle Trigonometry

- 1.1Use sine ratio to calculate angles and sides (Sin = $\frac{o}{h}$ )
- 1.2Use cosine ratio to calculate angles and sides (Cos = $\frac{a}{h}$ )
- 1.3Use tangent ratio to calculate angles and sides (Tan = $\frac{o}{a}$ )
- 1.4Combination of SohCahToa questions
- 1.5Solving expressions using 45-45-90 special right triangles
- 1.6Solving expressions using 30-60-90 special right triangles
- 1.7Word problems relating ladder in trigonometry
- 1.8Word problems relating guy wire in trigonometry
- 1.9Other word problems relating angles in trigonometry

- 1.1Use sine ratio to calculate angles and sides (Sin = $\frac{o}{h}$ )
##### 2Trigonometric Ratios and Angle Measure

- 2.1Angle in standard position
- 2.2Coterminal angles
- 2.3Reference angle
- 2.4Find the exact value of trigonometric ratios
- 2.5ASTC rule in trigonometry (All Students Take Calculus)
- 2.6Unit circle
- 2.7Converting between degrees and radians
- 2.8Trigonometric ratios of angles in radians
- 2.9Radian measure and arc length
- 2.10Law of sines
- 2.11Law of cosines
- 2.12Applications of the sine law and cosine law

- 2.1Angle in standard position
##### 3Bearings

##### 4Graphing Trigonometric Functions

##### 5Applications of Trigonometric Functions

##### 6Trigonometric Identities

##### 7Solving Trigonometric Equations

- 7.1Solving first degree trigonometric equations
- 7.2Determining non-permissible values for trig expressions
- 7.3Solving second degree trigonometric equations
- 7.4Solving trigonometric equations involving multiple angles
- 7.5Solving trigonometric equations using pythagorean identities
- 7.6Solving trigonometric equations using sum and difference identities
- 7.7Solving trigonometric equations using double-angle identities

- 7.1Solving first degree trigonometric equations
##### 8Inverse Trigonometric Functions

##### 9Imaginary and Complex Numbers

- 9.1Introduction to imaginary numbers
- 9.2Complex numbers and complex planes
- 9.3Adding and subtracting complex numbers
- 9.4Complex conjugates
- 9.5Multiplying and dividing complex numbers
- 9.6Distance and midpoint of complex numbers
- 9.7Angle and absolute value of complex numbers
- 9.8Polar form of complex numbers
- 9.9Operations on complex numbers in polar form

- 9.1Introduction to imaginary numbers