ABC is a triagle in which DE||BC. Find ` angle A `.

ABC is a triangle in which DE||BC and AD:DB = 5:4. Then DE:BC is

In the adjacent figure, ABC is a triangle in which angle ABC AC^2 = AB^2 + BC^2 -2BC. BD .

ABC is a right angled triangle with ABC = 90^@ . D is any point on AB and DE is perpendicular to AC. Prove that: If AC = 13 cm, BC = 5 cm and AE = 4 cm. Find DE and AD.

ABC is a right triagle with angle B=90^(@) . A circle with BC as diameter meets hypotenuse AC and point D. Prove that (i) ACxxAD=AB^(2) (ii) BD^(2)=ADxxDC

ABC is a right angled triangle in which angleB=90^(@) and AB=BC . Find angleA and angleC .

In a triangle ABC , DE||BC and AD = 1/3 BD . If BC = 5.6cm, find DE.

ABC is a right angled triangle with angleABC=90^(@) , D is any point on AB and DE is perpendicular to AC. (ii) If AC = 13 cm, BC = 5 cm and AE = 4 cm. Find DE and AD.

ABC is a right triangle, right angled at C and AB = sqrt2 BC. Then, find angle ABC.

In a Delta ABC, angle B=100^(@), angle C=70^(@), AE _|_ BC & AD is angle bisector . Find angle EAD .