Find the angle `theta` whose cosine is equal to its tangent.

Find the angle which is equal to its supplement.

Find the angle which is equal to its complement

Find the angle which is equal to its supplement

Find the angle which is equal to its complement

Find the angle which is equal to its complement

Find the angle which is equal to its supplement

Find an angle theta , whose rate of increase is twice as the rate of decrease of its cosine.

In what quadrant does an angle lie if (a) its sine is positive and its cosine is negative ? (b) Its tangent positive and its sine is negative ? (c ) its cosine is positive and its tangent is negative ? (d) its sine is negative and its cosine is positive ?

Find the angle between the line whose direction cosines are given by l+m+n=0a n dl^2+m^2-n^2-0.

Find the equation of the standard ellipse, taking its axes as the coordinate axes, whose minor axis is equal to the distance between the foci and whose length of latus rectum is 10. Also, find its eccentricity.