Find sin(2x), cos(2x), and tan(2x) from the given information. tan(x) = - , cos(x) > 0 sin(2x) = cos(2x) = tan(2x) = Need Help? Read It Watch It Submit Answer 5. [-/2 Points] DETAILS MY NO Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) 2 sin(170) cos(170) (b) 2 sin(40) cos(40) Need Help? Read It Watch It Submit Answer 6. [-/2 Points] DETAILS MY NO Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. 2 tan(60) (a) 1 - tan (60 ) 2 tan(60) (b) 1 - tan (60) Need Help? Read It Submit Answer 7. [-/2 Points] DETAILS MY NO Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) cos (310) - sin2(310 ) (b ) cos 2 (78 ) - sin 2 ( 70 )Prove the identity. cos2(4x) - sin2(4x) = cos(8x) Use a Double-Angle Formula and simplify. cos2(4x) - sin2(4x) = cos(2 . Need Help? Read It Watch It Submit Answer /1 Points] DETAILS MY NOTES PR Prove the identity. sin(4x) = 2 sin(2x) cos(2x) This answer has not been graded yet. Need Help? Read It Submit Answer (-/3 Points] DETAILS Prove the identity. (sin(x) + cos(x))