If A:B = 5:11, B:C = 33: 13, what’s A:B:C
If Δ∣∣ ∣∣a11a12a13a21a22a23a31a32a33∣∣ ∣∣ and Aij is cofactor of aij, then value of Δ is given by
a) a11A31+a12A32+a13A33 b) a11A11+a12A21+a13A31 c) a21A11+a22A12+a23A13 d) a11A11+a21A21+a31A31
Two numbers A and B are given by A=2×11 and B=2×3×5×13.
Represent A×B as a product of its primes.
In a △ABC, if s−a11=s−b12=s−c13, then tan2A2 is equal to