about b x about x about x Solve Tx c solve T x C Te C b D ww

about b x about x about x Solve Tx c solve T x C Te C b D www.webassign.net/web/stud 15306148 10. O 0.5/1 points I Previous Answers SAlgTrig4 7.5.040 Use an Addition or subtraction Formula to simplify the equation. cos(0) cos(20) sin(0 sin(20 2 cos (0) Find all solutions in the interval [0, 2T). (Enter your answers as a comma-separated list.) 3 3 11. -1 points SAlgTrig4 7.5.005.MI given equation. (Enter your answers as a comma-separated list. Let k be any integer. Ro Solve the no solution, enter NO SOLUTION.) tan2(0) 8 sec (0) 8

Solution

cos theta cos 2 theta + sin theta sin 2theta=sqrt2/2

cos(2theta-theta)=sqrt2/2

cos theta=sqrt2/2

theta=cos^-1(sqrt2/2)= pi/4, 7pi/4