Prove the Identity $\cos 3 x=\cos ^{3} x-3 \sin ^{2} x \cos x$

Q5: The angle of elevation to the

Q6: Use the grapher to determine which

Q7: Use the fundamental identities to change

Q8: Prove the identity: <br> <span class="ql-formula"

Q9: Simplify the expression <span class="ql-formula"

Q11: Use a power-reduction formula to find

Q12: What is the area of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB34225555/.jpg"

Q13: What is the general solution to

Q14: Use a sum or difference identity

Q15: Randy must find the distance between