Simplify a trig expression by multiplying by the LCD

Simplify a trig expression by multiplying by the LCD

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial covers simplifying complex fractions by using the least common denominator (LCD). It demonstrates how to handle fractions with multiple denominators and explains the process of rewriting fractions in terms of sines and cosines to simplify them further. The tutorial also explores the use of trigonometric identities, such as sine squared plus cosine squared, to simplify expressions. The session concludes with instructions for group work.

Read more

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the least common denominator (LCD) used to simplify the fractions with denominators 3 and 4?

7

6

12

15

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When converting fractions into trigonometric terms, which common denominator is used for cosine and sine?

Sine of Theta

Cosine of Theta

Tangent of Theta

Cosine of Theta, Sine of Theta

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result when cosine of Theta is multiplied by itself?

Sine of Theta

Cosine of Theta

Sine squared of Theta

Cosine squared of Theta

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified expression when sine squared plus cosine squared is calculated?

0

1

Theta

21

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the final simplification, what is the expression reduced to?

Secant of Theta

Cosine squared of Theta

Sine squared of Theta

Tangent of Theta