5
QuizMultiple Choice
Trigonometric Sum Identities
Question 5 of 10 • Precalculus
Oliver incorrectly states that the expression can be simplified as –1. Review Oliver’s work. = –1
Answer
A
The expression does not simplify to –1.
B
The expression does not have a value of –1.
C
The expression simplifies to , not .
D
The expression is equivalent to , not .