Use the given information to find (a) sin (s+t), (b) tan (s+t), and (c) the quadrant of s + t. 2 4 sin s= and sint = -7,s in quadrant II and t in quadrant IV (a) sin (s+t) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) (b) tan (s+t) = (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 IV Quadrant I Quadrant II