Question

AP and BC are tangents. Prove that (i) BP = PC (ii) Angle BAC = 90 degrees

Answer 1

Answer:

ab equals to AC because tangents on the same.

angle BAC is equal to 90 degree given Angle B and angle C is equal to 90° because tangent perpendicular to radius

ab equals to AC because radii of a same circle

angle is equal to 90 degree by angle sum property

therefore a quadrilateral with all angles is equal to 90 degree and two pairs of adjacent sides equal is a square

Step-by-step explanation:

Answer 2

Answer:

Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. ... The excretory organs remove these wastes.