Question
Download Solution PDFIn the given figure, O is the centre and ∠ACB = 40°, then ∠AOB =
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
∠ACB = 40°
Concept used:
The angle subtended by an arc of a circle at the centre is double the angle subtended by it on any other point on the remaining part of the circle.
Calculation:
As we know,
∠AOB = 2 × ∠ACB
⇒ ∠AOB = 2 × 40 = 80°
∴ The measure of ∠AOB is 80°
Confusion Points90° + ∠A/2 formula is used in case of triangle
Last updated on May 8, 2025
-> Check REET Qualifying Marks 2025 and also know how to calculate your marks here.
-> The REET Result 2024 for Level 1 & Level 2 has been announced on the official website.
-> The REET Final Answer Key 2025 has also been released.
-> The REET 2024 Exam was held on 27th & 28th February 2025.
-> The candidates who qualify for the REET exam will receive a salary range between Rs. 23,700 to Rs. 44,300.
-> Also, note during probation, the teachers will receive only the basic salary. Candidates must refer to the REET Previous Year Papers and REET Mock Tests to understand the trend of questions for the exam.