Find the angle between the lines x+2y−4=0x + 2y - 4 = 0x+2y−4=0 and 2x−y+5=02x - y + 5 = 02x−y+5=0.
60°60°60°
45°45°45°
tan−1(43)\tan^{-1}(\frac{4}{3})tan−1(34)
90°90°90°