`alpha,beta,gammaand delta` are angles in I,II,II and IV quadrants, respectively and none of them is an integral multiple of `pi//2`. They form an increasing arithmetic progression.
Which of the following does not hold?

alpha,beta,gammaand delta are angles in I,II,II and IV quadrants, respectively and none of them is an integral multiple of pi//2 . They form an increasing arithmetic progression. Which of the following holds?

alpha,beta,gammaand delta are angles in I,II,II and IV quadrants, respectively and none of them is an integral multiple of pi//2 . They form an increasing arithmetic progression. if alpha+beta+gamma+delta=thetaand alpha70^@ , then

In a arithmetic progression whose first term is alpha and common difference is beta , alpha,beta ne 0 the ratio r of the sum of the first n terms to the sum of n terms succeending them, does not depend on n. Then which of the following is /are correct ?

If alpha, beta, gamma are the angles which a line makes with positive direction of the axes, then match the quantities in column-I to their values in column-II:

Consider angles alpha = (2n+(1)/(2))pi pm A and beta = m pi +(-1)^(m)((pi)/(2)-A) where n, m in I. Which of the following is not true ?

Find the intervals in which f(x) = sin 3x, x in [0,pi/2] is (i) increasing, (ii) decreasing.

Line l in the xy-plane contains points from each of Quadrants II, III, and IV, but no points from Quadrant I. Which of the following must be true?

The frquencies of K_alpha, K_beta and L_alpha X-rays of a materail are gamma_1, gamma_2 and gamma_3 respectively. Which of the following relation holds good?

Find the intervals in which the following functions are: (i) increasing .(ii)decreasing f(x) = 2x^(2)-6x

The vector vec a=""alpha hat i+2 hat j+""beta hat k lies in the plane of the vectors vec b="" hat"i"+ hat j and vec c= hat j+ hat k and bisects the angle between vec b and vec c . Then which one of the following gives possible values of alpha and beta ? (1) alpha=""2,beta=""2 (2) alpha=""1,beta=""2 (3) alpha=""2,beta=""1 (4) alpha=""1,beta=""1