1. [-/3 Points] DETAILS SPRECALC7 7.3.003. Find sin(2x), cos(2x), and tan(2x) from the given information. sin(x) = x in Quadrant I sin(2x) = cos(2X) = tan(2x) = Need Help? Read It Watch It 2. [-/3 Points] DETAILS SPRECALC7 7.3.007. Find sin(2x), cos(2x), and tan(2x) from the given information. sin(x) = - 8 17 x in Quadrant III sin(2x) = COS(2X) = tan(2x) = Need Help? Read It Watch It3. [-/3 Points] DETAILS SPRECALC7 7.3.009. 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 4. [-/1 Points] DETAILS SPRECALC7 7.3.017. Use an appropriate Half-Angle Formula to find the exact value of the expression. sin(150 ) Need Help? Read It Watch It 5. [-/1 Points] DETAILS SPRECALC7 7.3.023. Use an appropriate Half-Angle Formula to find the exact value of the expression. tan ( Need Help? Read It Watch It6. [-/2 Points] DETAILS SPRECALC7 7.3.029. MY NOT Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) 2 sin(140) cos(140 ) (b) 2 sin(30) cos(30) Need Help? Read It Watch It 7. [-/2 Points] DETAILS SPRECALC7 7.3.032. Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) cost( ) - sin? (b) 2 sin( ) cos Need Help? Read It8. [-/3 Points] DETAILS SPRECALC7 7.3.037. Find sin(), cos(*) and tan 2 from the given information. sin(x) = . 12 00 e in Quadrant III 13 Need Help? Read It Watch It 14. [-/1 Points] DETAILS SPRECALC7 7.3.053. Evaluate the expression under the given conditions. sin(20); sin(0) = , 0 in Quadrant II Need Help? Read It Watch It 15. [-/1 Points] DETAILS SPRECALC7 7.3.057. Write the product as a sum. cos(x) sin(3x) Need Help? Read It Watch It16. [-/1 Points] DETAILS SPRECALC7 7.3.063. MY NOTES Write the sum as a product. cos(3x) - cos(7x) Need Help? Read It Watch It 17. [-/3 Points] DETAILS SPRECALC7 7.3.075. Prove the identity. (sin(x) + cos(x))2 = 1 + sin(2x) Expand the product, and use a Pythagorean Identity and a Double-Angle Formula to simplify. (sin(x) + cos(x))2 = sin (x) + 2 sin(x) cos(x) + = 1 + 2 sin(x) Need Help? Read It Watch It18. [-/2 Points] DETAILS SPRECALC7 7.3.084. Prove the identity. tan(x) = sin (2x) 1 + cos(2x) sin(2x) 2 sin(x) . = 1 + cos(2x) 1 + 2 cos2(x) - 1) 2 sin(x) cos(x) 2 2 = tan(x) Need Help? Read It Submit