Question

solve this question with full explanation​

Answer 1

Step-by-step explanation:

⭐Question:-

In figure XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB touching at C, intersecting XY at A and X'Y' at B. prove that ∠AOB = 90°

⭐Answer:-

Solution:-

Given:

XY is tangent a point P and X'Y' is a tangent at point Q

And XY ।। X'Y'

AB is a tangent at point C

To prove:

∠AOB = 90°

Proof:

Join OC

for tangent AB and radius OC

OC ⊥ AB

so, ∠AOC = ∠BCO = 90°

Answer 2

Answer:

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Step-by-step explanation:

Breathing: The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction and then exhaled due to muscle relaxation.