dont solve number 22

2 l. A projectile is launched from a platform 18 feet high with an initial velocity of [04 feet per second, The height h of the projectile at I seconds after launch is given by h = 161'2 + 104! + 13 feet. (a) How many seconds after launch does the projectile attain maximum height? Show work. (13) What is the maximum height? Show work. x+10 32 + 22. Solve: x + 2 x2 4 = 0. Show work. 23. Suppose that sin 6' = 45 and that 6 is a Quadrant II angle. (a) Find the exact value of cos 6. Show work. {b} Find the exact value of sintZS ). Show work. 24. Prove the identity sec(x) (Sin(x) + (50800)2 = sec(x) + 2 Sin(x)