Multiple Choice
Simplify the expression by using a sum or difference identity.
-cos (265°) cos (25°) + sin (265°) sin (25°)
A) 
B) 
C) 
D) 
Correct Answer:
Verified
Correct Answer:
Verified
Q5: Find the exact value of the expression
Q6: Use a product-to-sum identity to rewrite the
Q7: Find all angles in degrees that satisfy
Q8: Factor and, if possible, simplify the expression.<br>-<img
Q9: Use an identity to write the expression
Q11: Multiply and simplify.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8458/.jpg" alt="Multiply and simplify.
Q12: Find all real numbers that satisfy the
Q13: Prove that the equation is an identity.<br>-<img
Q14: Choose the equivalent expression for the given
Q15: Simplify the expression.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8458/.jpg" alt="Simplify the expression.