Suppose `alpha,beta,gammaa n ddelta` are the interior angles of regular pentagon, hexagon, decagon, and dodecagon, respectively, then the value of `|cosalphasecbetacosgammacos e cdelta|` is _________

Suppose alpha, beta, gammaand delta are the interior angles of regular pentagon, hexagon, decoagon and dedecogon respectively, find the values of |cosalpha +sec beta+cos gamma+"coses"delta|. Assume that all polygons are regular.

Prove that the interior angle of a regular pentagon is three xx the exterior angle of a regular decagon.

The ratio of the measures of an interior angles of a regular hexagon to that of a regular dodecagon is:

12.Show that an interior angle of a regular pentagon is 3 xx an exterior angle of a regular decagon.

Find the measure of each interior angle of a regular (i) pentagon (ii) hexagon (iii) octagon (iv) polygon of 12 sides

If each interior angle is double of each exterior angle of a regular polygon with n sides, then the value of n is

If alpha, beta and gamma are angles made by the line with positive direction direction of X-axis, Y-axis and Z-axis respectively, then find the value of cos2alpha+cos2beta+cos2gamma .

If a line makes angles alpha,beta and gamma with threew- dimensional coordinate axes,respectively, then find the value of cos2 alpha+cos2 beta+cos2 gamma

What is the sum of all interior angles of a regular (i) pentagon (ii) hexagon (iii) nonagon (iv) polygon of 12 sides ?