OAT Math Formulas Exam Questions with Complete Solutions

sin A = - Answer-opposite/hypotenuse cos A = - Answer-adjacent/hypotenuse tan A = - Answer-opposite/adjacent csc A = - Answer-hypotenuse/opposite = (1/sin A) sec A = - Answer-hypotenuse / adjacent = (1/cos A) cot A = - Answer-adjacent / opposite = (1/tan A) sin (-A) = - Answer-- sin A cos (-A) = - Answer-cos A sin A = ___ - Answer-=cos (90' - A) cos A = ____ - Answer-= sin (90'-A) sin 2 A = - Answer-2 sin A cos A cos 2 A = - Answer-cos^2 A - sin^2 A Pythagorean Identities - Answer-sin^2 A + cos^2 A = 1 tan^2 A + 1 = sec^2 A sin B = - Answer-0': 0 30' (pi/6): 1/2 45' (pi/4): sqrt 2/2 60' (pi/3): sqrt 3/2 90': 1 cos B = - Answer-0': 1 30' (pi/6): sqrt 3/2 45' (pi/4): sqrt 2/2 60' (pi/3): 1/2 90': 0 tan B = - Answer-0': 0 30' (pi/6): sqrt 3/3