Save for later

Trigonometric equations and identities

This course is a part of Trigonometry, a 5-course Topic series from Khan Academy.

Learn how to solve trigonometric equations and how to use trigonometric identities to solve various problems.

This course contains 7 segments:

The inverse trigonometric functions

Learn about the inverse functions of sine, cosine, and tangent, and how they are defined even though the functions are not really invertible. These functions will be very helpful when you will solve trigonometric equations.

Solving basic sinusoidal equations

Learn how to solve equations of the form sin(x)=d or cos(x)=d where d is any number. For example, solve sin(x)=0.6.

Solving advanced sinusoidal equations

Learn how to solve equations of the form a*sin(bx+c)=d or a*cos(bx+c)=d where a, b, c, and d are any number. For example, solve 5*sin(2x-1)=3.

Solving sinusoidal models

Solve word problems that involve sinusoidal modeling functions.

Introduction to the trigonometric angle addition identities

Learn about the trigonometric angle addition identities, which help us discuss the trig values of sums of angles in terms of the trig values of the individual angles. For example, we can express sin(x+y) in terms of sin(x), sin(y), cos(x), and cos(y).

Using trigonometric identities to solve problems

Learn about different ways in which trigonometric identities, such as the Pythagorean identity and the angle addition identities, can be used to solve problems.

Challenging trigonometry problems

See Sal solve a bunch of very challenging geometry and algebra problems that involve trigonometry.

Get a Reminder

Send to:
Rating Not enough ratings
Length 7 segments
Starts On Demand (Start anytime)
Cost Free
From Khan Academy
Download Videos On all desktop and mobile devices
Language English
Subjects Mathematics
Tags Math

Get a Reminder

Send to:

Similar Courses

Careers

An overview of related careers and their average salaries in the US. Bars indicate income percentile.

Write a review

Your opinion matters. Tell us what you think.

Rating Not enough ratings
Length 7 segments
Starts On Demand (Start anytime)
Cost Free
From Khan Academy
Download Videos On all desktop and mobile devices
Language English
Subjects Mathematics
Tags Math

Similar Courses

Sorted by relevance

Like this course?

Here's what to do next:

  • Save this course for later
  • Get more details from the course provider
  • Enroll in this course
Enroll Now