If x is numerically so small so that x2 and higher power of x can be neglected, then is approximately equal to
If the sides of a right angle triangle form an AP, the 'sin' of the acute angles are
A.
Hence, option (a) satisfies this equation.
If S1, S2 and S3 are the sums of n, 2n and 3n terms of an arithmetic progression respectively, then
S2 = 3S3 - 2S1
S3 = 4(S1 + S2)
S3 = 3(S2 - S1)
S3 = 2(S2 + S1)