Simplify a trig expression by multiplying by the LCD

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.

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

• 7

• 6

• 12

• 15

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

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

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

• 0

• 1

• Theta

• 21

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

• Secant of Theta

• Cosine squared of Theta

• Sine squared of Theta

• Tangent of Theta