Solve a trigonometric function with sine on both sides

Solve a trigonometric function with sine on both sides

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial explains how to solve the trigonometric equation 2 sine squared of X equals sine of X. It begins by isolating the variable X and using factoring and the zero product property to simplify the equation. The tutorial then demonstrates how to solve for X using the unit circle, identifying when sine of X equals zero and one-half. Finally, it discusses finding all solutions by considering coterminal angles, providing a comprehensive understanding of solving such trigonometric equations.

Read more

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the equation 2 sine squared of X equals sine of X?

Divide both sides by sine of X

Multiply both sides by sine of X

Subtract sine of X from both sides

Add sine of X to both sides

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What mathematical technique is used to solve the equation after isolating the variable X?

Completing the square

Using the quadratic formula

Factoring and applying the zero product property

Graphing the equation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When factoring the equation, what common factor is taken out?

sine of X

X

2

cosine of X

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At which points on the unit circle is sine of X equal to zero?

π/2 and 3π/2

0 and π

π/4 and 3π/4

π/6 and 5π/6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the angles where sine of X equals 1/2 on the unit circle?

π/4 and 3π/4

π/6 and 5π/6

π/2 and 3π/2

π/3 and 2π/3