Properties of T...

In a triangle, the lengths of two larger sides are 10 cm and 9 cm. If the angles of the triangle are in AP, then the length of the third side is

If the bisector of the angle P of a triangle PQR meets QR in S, then

In a ∆ABC, a,b, c are the sides of the triangle opposite to the angles A, B, C, respectively. Then, the value of a³ sin (B - C) + b³ (C - A) + c³ (A - B) is

If the angles of a triangle are in the ratio 1 : 1 : 4, then the ratio of the perimeter of the triangle to its largest side is

Angles A, B, C of a ∆ABC are in AP and b : c = √3 : √2, then ∠A is given by

If in a ∆ABC, a tan A + b tan B = (a + b) tan (A + B)/2 , then

a³ cos (B - C) + b³ cos (C - A) + c³ cos (A - B) is equal to

If in a ∆ABC , a/ cos A = b/ cos B, then

If A + B + C = 180^o