[سلمى جاد]

ABCD is a parallelogram, AC intersect BD=(M) , AC=16cm , BD=2cm and m(AM=54 calculate the length of AD to the nearest cm

IF 1/2 SIN A=1/3SIN B=1/4SIN C ,find m(.0



ABC is a triangle in which cos A=2/5 ,b=2 1/2cm and C=2cm , prove that triangle ABC is an isosceles triangle.