2010 · Q77
In the figure given above (circle with diameter AB, centre P; C on circumference; PC drawn), A and B are end points of diameter of a circle with centre at P, and C is a point on the circumference of the circle such that ∠ABC = 35°, then what is ∠PCA ?
Elementary MathematicsGeometry
- A25°
- B30°
- C35°
- D55°
Explanation
∠ACB=90°, ∠BAC=55°; PA=PC gives ∠PCA=55°.