Mathematics
In the given diagram, O is the center of the circle, and PQ is a tangent at A. If ∠ABC = 50°, then values of x, y and z respectively are :
50°, 100°, 40°
50°, 50°, 65°
40°, 80°, 50°
50°, 25°, 78°
Related Questions
The scale factor of a picture and the actual height of Sonia is 20 cm : 1.6 m. If her height in the picture is 18 cm, then her actual height is :
14.4 m
2.25 m
1.78 m
1.44 m
In the adjoining figure, O is the center of the circle, and a semicircle is drawn on OA as the diameter. ∠APQ = 20°. The degree measure of ∠OAQ is :
25°
40°
50°
65°
In the given figure, PT and QT are tangents to a circle such that ∠TPS = 45° and ∠TQS = 30°. Then, the value of x is :
30°
45°
75°
105°
A cylindrical metallic wire is stretched to double its length. Which of the following will NOT change for the wire after stretching?
Its curved surface area
Its total surface area
Its volume
Its radius