HARD
JEE Main
IMPORTANT
Earn 100

The lengths of two adjacent sides of a cyclic quadrilateral are 2 units and 5 units and the angle between them is 60o. If the area of the quadrilateral is 43 sq. units, then the perimeter of the quadrilateral is

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Important Questions on Properties of Triangle

MEDIUM
JEE Main
IMPORTANT
Let a,b and c be the length of sides of a triangle ABC such that a+b7=b+c8=c+a9. If r and R are the radius of incircle and radius of circumcircle of the triangle ABC, respectively, then the value of Rr is equal to
MEDIUM
JEE Main
IMPORTANT
Let C be the centre of the circle x2+y2-x+2y=114 and P be a point on the circle. A line passes through the point C, makes an angle of π4 with the line CP and intersects the circle at the points Q and R. Then the area of the triangle PQR (in unit2) is
MEDIUM
JEE Main
IMPORTANT
For a triangle ABC, the value of cos2A+cos2B+cos2C is least. If its inradius is 3 and incentre is M, then which of the following is NOT correct?