Add two trig functions using co function identities

The video tutorial emphasizes the importance of mastering fraction operations before tackling more complex mathematical concepts. It provides a step-by-step guide on adding and subtracting fractions, highlighting the need for common denominators. The tutorial also introduces cofunction identities in trigonometry, explaining how to rewrite expressions using these identities.

Why is it recommended to perform fraction operations first when dealing with trigonometric functions?

• Because fractions are easier to handle than trigonometric functions.

• Because it helps in simplifying the overall expression.

• Because trigonometric functions are not important.

• Because fractions are more fun to work with.

What is the result of adding 1/4 and 1/4?

• 1/2

• 1/8

• 1/4

• 2/4

What must you do if fractions have different denominators?

• Find a common denominator.

• Multiply the numerators.

• Add them directly.

• Ignore the denominators.

What is the cofunction of sine?

• Secant

• Cosecant

• Cosine

• Tangent

How can secant be expressed in terms of cosine?

• sine

• 1/cosine

• 1/sine

• cosine