Question 1 If s denotes the length of the arc of a circle of radius r subtended by a central angle 0, find the missing quantity. r =11.7 inches, 0 =315", s = ? O 645 in. O 64.4 in. O 64 6 in. 0 643 in. Question 2 Convert the angle in radians to degrees. 32 O 320 O 6409 O 11 O 1280m Question 3 Use identities to find the exact value of the indicated trigonometric function of the acute angle 0. sin 8 = 7, cos 0 =$15 Find cesc B. 0 4 O AV15 15 O V15