In the ΔABC, and the bisectors of and meets at P What is the value (in degrees) of
100°
105°
115°
125°
Two circles of same radius intersect each other at P and Q. If the length of the common chord is 30 cm and distance between the centres of the two circles is 40 cm, then what is the radius (in cm) of the circles?
25 cm
50 cm
A.
25 cm
Let PQ be the common chord which is 30 cm given.
∴ PR = PQ/2 = 30/2 = 15 cm
Let OO' be the distance between two centres which is 40 cm given.
∴ OR = OO'/2 = 40/2 = 20 cm.
Now, In ΔOPR,
In the given figure, and MN is a tangent at R. What is the value (in degrees) of x,y and z respectively.
40°, 46°, 94°
40°, 50°, 90°
46°, 54°, 80°
50°, 40°, 90°
In ΔPQR, the perpendicular of PQ at S meets QR at T. If then what is the value (in degrees) of ?
25°
40°
50°
60°