Use the given information to find (a) sin (s+t), (b) tan (s+t), and (c) the quadrant of s+t. sin s= 3 6 and sint = - 7 s in quadrant II and t in quadrant IV 7 (a) sin (s +t) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) (b) tan (s+t) = a (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) (c) What is the quadrant of s+t? Quadrant III Quadrant I Quadrant II Quadrant IV