are the roots of the Q.22 If tan an...
Question

# are the roots of the Q.22 If tan and tan Q.28 equation 8x2 – 26x + 15 = 0 then cos (a + B) is equal to - n 78° (A) - 627 (B) 923 (D)-1

JEE/Engineering Exams
Maths
Solution
62
4.0 (1 ratings)
Pun ob noots: ( tan frac{alpha}{2}+tan frac{B}{2}=frac{2 b}{8} )