From a point on the level ground, the angle of elevation of top of a pole is on moving 20metres nearer,the angle of elevation is . Then,the height of the pole , is
15
20
A bag contains 5 black balls, 4 white balls and 3 red balls. If a ball is selected at random, the probability that it is a black or a red ball, is
The probability of getting qualified in IITJEE and EAMCET by a student are respectively . The probability that the student gets qualified for atleast one of these test, is
One die and a coin (both unbiased) are tossed simultaneously. The probability of getting 5 on the top of the die and tail on the coin is
If the axes are rotated through an angle 45° in the positive direction without changing the origin,then the co-ordinates of the point (, 4) in the old system are
If a straight line perpendicular to 2x - 3y + 7 = 0 forma triangle with the co-ordinate axes whose area is 3 sq. units, then the equation of the straight line is
If ( - 2, 6) is the image of the point (4, 2) with respect to the line L = 0, then L is equal to
6x - 4y - 7 = 0
2x + 3y - 5 = 0
3x - 2y + 5 = 0
3x - 2y + 10 = 0
C.
3x - 2y + 5 = 0
If the co-ordinate axes are the bisectors of the angles between the pair of lines
a + b = 0
h = 0