Solve for x, 0 ≤ x < 2π, sin2x = √2/2 We first change the domain, because it says 2x. That would make 0 ≤ x < 2π into 0 ≤ 2x < 4π, meaning we have to collect answers not once around the unit circle but twice around the unit circle. When sinx = /sqrt2/2, 2x = π/4, 3π/4, 9π/4, 11π/4 Then we solve for x by dividing each answer by 2. x = π/8, 3π/8, 9π/8, 11π/8 Make sure each value is in the original domain 0 ≤ x < 2π

Solve for x, 0 ≤ x < 2π, tan(x/2) = -1 We first change the domain, because it says x/2. That would make 0 ≤ x < 2π into 0 ≤ x/2 < π, meaning we have to collect answers not once around the unit circle but only half around the unit circle. When tanx = -1, x/2 = 3π/4 Then solve for x by multiplying the answer by 2. x = 6π/4 = 3π/2

“Trigonometry Online Visually in 24 Hours”

   Dr. Wayne Huang

 Looking for an easier way to learn trigonometry?

 Here is an easy way to ace this course: Rapid Learning

 Trigonometry is about triangle, especially the right triangles. It describes the relationships between the sides and the angles of the triangles with the trigonometric functions.

  With the nature of trigonometry, it is mostly a visual reasoning science, which is best learned via visual tutorials, instead of the texts.

 To master trigonometry, first understand the core concepts and then apply such an understanding to solve problems, particularly the logic reasoning.

 Now to the real question … What exactly is Rapid Learning?

 Simply put: Rapid Learning = Smart Teaching + Rich Media

 Smart teaching involves the gradual introduction of math concepts and step-by-step illustration of problem solving.

 Rich Media is the combination of the latest e-learning methodologies and new web/video technologies to cater the visual learning.

 The end result … Teach Yourself Trigonometry Online Visually in 24 Hours.

 How can anyone learn trigonometry online in 24 hours?

 Here is how: Each rapid learning course comes with 24 chapters, one hourly chapter at a time, total of 24 hours. It takes 30 minutes with the video, 20 minutes on the drill and 10 minutes on super review, total of one hour per chapter. It is an easy and rapid way to master geometry online visually.

 Rapid Learning Center offers the visual learning course in trigonometry with expert narration, making learning geometry a much easier and fun experience. Just follow the system – watch the video, do the drills and study the cheat sheet, 24 chapters in 24 hours.