In ΔABC, ∠B is right angle, D is the mid point of the side AC. If AB = 6 cm, BC = 8cm, then the length of BD is
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In a triangle ABC, ∠A = 70°, ∠B = 80° and D is the incentre of ΔABC. ∠ACB = 2x° and ∠BDC = y°. The values of x and y, respectively are
Sum of twice a fraction and 5 times its reciprocal is 7. What is the fraction?
The upper part of a tree broke at a certain height makes an angle of 60 ° with the ground at a distance of 10 m. from its feet. The original height of the tree was
The square root of which of the following numbers is irrational?
The centroid of a triangle is the point where
What is the reflection of the point (-1 , 3) in the line x = -4?
The effective annual rate of interest corresponding to a nominal rate of 7% per annum payable halfyearly is
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