High School Math : Using Sum and Product Identities

Study concepts, example questions & explanations for High School Math

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1 : Using Sum And Product Identities

Simplify .

Possible Answers:

Correct answer:

Explanation:

To simplify , break them into their SOHCAHTOA parts:

.

Notice that the opposite's cancel out, leaving .

Example Question #2 : Using Sum And Product Identities

Simplify .

Possible Answers:

This is the most simplified version.

Correct answer:

Explanation:

Break down  into SOHCAHTOA to solve:

 and .

Therefore, . Note that the opposite's cancel out, leaving , which is the same as .

Learning Tools by Varsity Tutors

Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: