In `Delta ABC, /_ A = /_ B + /_ C`, then the circum centre is at ______

In Delta ABC if a: b: c = 3: 7 : 8 then the ratio of circum radius to its inradius is

In a Delta"le" ABC R=3 (circum radius) Let O be the circum centre and H be the ortho centre then (1)/(64)(AH^(2)+BC^(2))(BH^(2)+AC^(2))(CH^(2)+AB^(2))=

In triangle A B C, /_A=40 ^circ, B C=8 cm Find the circum diameter of the triangle. [sin '40=0.64]'

In Delta ABC, (a + b+ c) (b + c -a) = kbc if

In Delta ABC, (a + b+ c) (b + c -a) = kbc if

In Delta ABC, (a + b+ c) (b + c -a) = kbc if

In Delta ABC, (a + b+ c) (b + c -a) = kbc if

In Delta ABC, O is the circum centre of the circle. If angle OBC = 37^(@) then angle BAC is equal to :