4. a) Derive the half-angle formula for cos 2 1+cosx , and 士 1 – cosx sin- 士 from a double angle formula for sine and cosine. Hint: use the double angle formula and try to rearrange it for what is given above. Explain your steps like Identities. b) Determine the value of cos 8. c) Determine the value of sin( 12
4. a) Derive the half-angle formula for cos 2 1+cosx , and 士 1 – cosx sin- 士 from a double angle formula for sine and cosine. Hint: use the double angle formula and try to rearrange it for what is given above. Explain your steps like Identities. b) Determine the value of cos 8. c) Determine the value of sin( 12
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter67: Analysis Of Trigonometric Functions
Section: Chapter Questions
Problem 56A: For each exercise, functions and cofunctions of two angles are given. Which of the functions or...
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