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,gamma and delta are the interior angles of regular pentagon,heagon,decagon,and dodeccagon,respectively,then the value of |cos alpha sec beta cos gamma csc delta| 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.

Suppose a, b, g and d are the interior angles of regular pentagon, hexagon, decagon and dodecagon, respectively, then the value of Icos a sec b cos g cosec dl is

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

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

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.

If a line makes angles alpha,betaa n dgamma with three-dimensional coordinate axes, respectively, then find the value of cos2alpha+cos2beta+cos2gammadot