Verify the identity using either sum/ difference formulas or multiple angle formulas. SHOW ALL WORK AND MAKE SURE ALL STEPS ARE LOGICAL DO NOT SKIP STEPS sin(3u) = sin u (3 – 4 sin² u)

Use the identities to find sinx and cosx if tanx=5 and cosx>0

Evaluate the following expressions. Your answer must be an exact angle in radians and in the interval 2' 2 Example: Enter pi/6 for 6 V3 1 (a) tan 3 ()- V3 1 (b) tan 3 (c) tan-'(– v3) Question Help: D Video 1 DVideo 2 Submit Question

solve for x,  if possible, explain your result (look at problem in picture)