Maths-
General
Easy
Question
The sides of a triangle are 
and 
for some 
.Then the greatest angle of the triangle is
- 600
- 1500
- 1200
- 900
Hint:
The angles of the triangle ABC are denoted by A, B, C and the corresponding opposite sides by a, b, c.
The correct answer is: 1200
The sides of a triangle are and for some .
and for some .The law of cosines generalizes the Pythagorean formula to all triangles. It says that c2, the square of one side of the triangle, is equal to a2 + b2, the sum of the squares of the the other two sides, minus 2ab cos C, twice their product times the cosine of the opposite angle. When the angle C is right, it becomes the Pythagorean formula.
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Two disc of same thickness but of different radii are made of two different materials such that their masses are same. The densities of the materials are in the ratio 1:3. The moment of inertia of these disc about the respective axes passing through their center and perpendicular to their planes will be in the ratio
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physics-General
