A man walks in a certain direction for 5 km and then walks in the south direction for 4 km. If he ends up in the east direction with respect to the starting position, how far is he from the starting position?
The correct answer is B
The line y = x + 1 is a tangent to the curve y2 = 4x at the point
Which of the following is an anti-derivative of cos 2x.
