Recent questions tagged sat

If the arcs of the same length in two circles subtend angles of $60^{\large\circ}$ and $75^{\large\circ}$ at their respective centres,find the ratio of their radii

asked May 21, 2014 by sreemathi.v

1 answer

In right-angled triangle, the difference between the two acute angles is $(\large\frac{\pi}{15})^c$.Find the angles in degrees

asked May 20, 2014 by sreemathi.v

1 answer

The angles of a triangle are in the ratio 3 : 4 : 5.Find the smallest angle in degrees and the greatest angle in radians

asked May 20, 2014 by sreemathi.v

1 answer

The wheel of a railway carriage is 40cm in diameter and makes 6 revolutions in a second. How fast is the train going?

asked May 20, 2014 by sreemathi.v

2 answers

Find the value of $cosec(-\large\frac{41\pi}{4})$

asked Apr 22, 2014 by sreemathi.v

1 answer

$1+i+i^{2}+i^{3} + i^{4}+i^{5}+i^{6}---+i^{2n}\;$ is

asked Apr 18, 2014 by yamini.v

1 answer

If $\;z_{1} = \sqrt{3} + i \sqrt{3}\;$ and $\;z_{2} =\sqrt{3} + i\;$ , then find the quadrant in which $\;(\large\frac{z_{1}}{z_{2}})\;$ lies

asked Apr 18, 2014 by yamini.v

1 answer

What is the reciprocal of $\;3+ \sqrt{7} i$ ?

asked Apr 18, 2014 by yamini.v

1 answer

The conjugate of the complex number $\;\large\frac{1-i}{1+i}\;$ is

asked Apr 17, 2014 by yamini.v

1 answer

Prove : $2\sin ^2\large\frac{3\pi}{4}$$+2\cos^2\large\frac{\pi}{4}$$+2\sec^2\large\frac{\pi}{3}$$=10$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the values of the trigonometric function $\sin(-\large\frac{11\pi}{3})$

asked Apr 17, 2014 by sreemathi.v

1 answer

Solve $\;x^{2} + x + 1=0 $

asked Apr 16, 2014 by yamini.v

1 answer

Find the radian measure corresponding to the following degree measure :-$240^{\large\circ}$

asked Apr 16, 2014 by sreemathi.v

1 answer

Find the multiplicative inverse of the complex number $\;\normalsize -i\;$

asked Apr 10, 2014 by yamini.v

1 answer

Express the given complex number in the form $\;a+ib : (-2-\large\frac{1}{3} \normalsize i)^{3}$

asked Apr 9, 2014 by yamini.v

1 answer

Express the complex number given below in the form $a+ib$: $(5i)\;(-\large\frac{3}{5}$$i)$

asked Apr 9, 2014 by balaji.thirumalai

1 answer

Express the given complex number in the form $\;a+ib : (1-i)^{4}$

asked Apr 9, 2014 by yamini.v

1 answer

Express the given complex number in the form $\;a+ib :\;[( \normalsize \large\frac{1}{3} +\normalsize i \normalsize \large\frac{7}{3}) + (\normalsize 4 + \normalsize i \normalsize \large\frac{1}{3})-( \normalsize -\large\frac{4}{3}+ \normalsize i)]$

asked Apr 9, 2014 by yamini.v

1 answer

Express the complex number $(1-i)-(-1+6i)$ in the form $a+ib$

asked Apr 9, 2014 by yamini.v

1 answer

Express the complex number $i^{-39}$ in the form $a+ib$

asked Apr 9, 2014 by yamini.v

1 answer

The density of crystalline sodium chloride is $2.165g cm^{-3}$ . What is the edge length of the unit cell.

asked Apr 9, 2014 by sharmaaparna1

1 answer

What is the pressure of HCl gas at $-40^{\large\circ}C$ if its density is $8.0 kgm^{-3}? (R = 8.314 JK^{-1}mol^{-1})$

asked Apr 8, 2014 by sharmaaparna1

1 answer

The average kinetic energy of 1.6 g $CH_4$ molecules at $27^{\large\circ}C$ is:

asked Apr 7, 2014 by sharmaaparna1

1 answer

The density of salt solution is $1.13\;g\;cm^{-3}$ at $298\;k$. The solution contains $17.0 \%$ sodium chloride . What volume of solution will contain $38.42 \;g$ of $NaCl$?

asked Apr 1, 2014 by meena.p

1 answer

How many g of KCl would have to be dissolved in $60\;g\; H_2O$ to give $20\%$ by weight of solution ?

asked Apr 1, 2014 by meena.p

1 answer