Question

What are the important questions of exercise 10.5 of class 9 cbse maths

Answer 1

Step-by-step explanation:

question 1 ,5,6,8 are some important question

Answer 2

Answer:

9 Math

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Ex 10.5 Part 1

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Circle

Exercise 10.5 Part 1

Question 1: In the given figure, A, B and C are three points on a circle with centre O such that ∠BOC = 30° and ∠AOB = 60°. If D is a point on the circle other than the arc ABC, find ∠ADC.

circle exercise 10.5 question 1 figure

Answer: ∠AOC = 60° + 30° = 90°

Since angle made by an arc on the centre is double the angle made anywhere else on the circle

Hence, ∠ADC = 90°/2 = 45°

Step-by-step explanation:

most important question