Find the exact value of the expressions cos(a + B), sin(a + B) and tan(+) under the following conditions sin(a)= 12 13 a lies in quadrant I, and sin()= 24 25 Blies in quadrant II. a. cos(a+p)= (Simplify your answer Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.) b. sin(a+B)= (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression) c. tan(a+B)= (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression)