Show that the sum of the exterior angles of `/_\ABC ` is `360^@`

If a circle intercepts the ellipse at four points, show that the sum of the eccentric angles of these points is an even multiple of pi

The exterior angle at R in DeltaPQR is

Sum of the complementary angles is-

In the adjacent figure, ABC is a triangle in which angleB = 50^(@) and angleC = 70^(@) . Sides AB and AC are produced. If ‘z’ is the measure of the angle between the bisectors of the exterior angles so formed, then find 'z'.

The sum of odd divisors of 360 is

Given the base of the triangle and the sum of tangent of base angles as a negative constant -k^(2) , show that the locus of the vertex of the triangle is a parabola.

Sum of the angles at a point on A Line is =

Fill in the Blanks : If an exterior angle of triangle is 120^@ and one of the interior opposite opposite angles is 70^@ , then the second interior angle is ___