If a =3,b= 5,c= 7 in a triangle ABC, find the value of sec C.

Find the value of .^5C_1

If A,B and C are interior angle of a triangle ABC ,then the value of cos((B+C)/2)

In triangle ABC,right-angled at B ,if tan A= 1/ sqrt3 , find the value of sin A cos C+cos A sin C

If sin A=3/5 , sin B=12/13 and sin C=7/25 where A,B,C are acute angles, find the value of sin (A + B + C).

In an isosceles triangle ABC if AB = AC= 15 cm and BC =18 cm, find the values of cos /_ABC and sin /_ABC .

If A(5,-1),B(-1,7) and C(1,2) are the verticles of a triangle find the equation of the internal bisector of angleA

ABC a right angle triangle, right angled at B. AD and CE are the medians drawn from A and C respectively. If AC = 5 m and AD = (3sqrt5)/2 m , find the length of CE.

If the point A(4,3) and B(x,5) are on the circle with centre C(2,3)then find the value of x.

if a+b+c=9 and a^2+b^2+c^2 =35,then find the value of a^3+b^3+c^3-3abc

In triangle ABC ,right-angled at B if tanA=1/sqrt3 ,find the value of:(i)sinA cosC+cosA sinC