Question
If the sides of a triangle are in the ratio 
then greatest angle is
- 900
- 1200
- 600
Hint:
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.
The correct answer is: 1200
If the sides of a triangle are in the ratio then greatest angle is
Angle c is greatest in triangle.
then greatest angle isAngle c is greatest in triangle.
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