Essay
Write a formula for by writing
as
and using the formula for the cosine of a sum.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q15: Prove that the identity is true. <img
Q16: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX9354/.jpg" alt="If with
Q17: Prove the identity. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX9354/.jpg" alt="Prove the
Q18: Prove that the identity is true. <br>
Q19: Find the identical expression for the following.
Q21: Find the identical expression for the following.
Q22: Use your graphing calculator to determine if
Q23: Write the expression as a single trigonometric
Q24: Use your graphing calculator to determine if
Q25: Use your graphing calculator to determine if