Download App

Circles — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSCircles1 Mark
✓

Answer

  1. 70º
    Solution:

    In, $\triangle\text{ABD}$
    $\angle\text{D}=180^\circ-\angle\text{A}-\angle\text{B}$
    $=180^\circ-110^\circ=70^\circ$
    Since angles made by same chord at any point of circumference are equal so, $\angle\text{ACB}=\angle\text{ADB}=70^\circ$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q" from Circles→Circles — all question types→MATHS STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

Which of the following is an irrational number?
  1. 3.14
  2. 3.141414...
  3. 3.14444
  4. 3.141141114...
→
Two sides of a triangle are of length 4cm and 2.5cm. The length of the third side of the triangle cannot be:
→
Mode of the data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17, 15 is:
→
Semiperimeter of scalene triangle of side k, 2k and 3k is:
→
$\text{Mode}+\frac{2}{3}(\text{Mean - Mode})=$
→
Two lines AB and CD intersect at O. If $\angle\text{AOC}+\angle\text{COB}+\angle\text{BOD}=270^\circ,$then $\angle\text{AOC}=$
  1. 70°
  2. 80°
  3. 90°
  4. 180°
→
A diagonal of a rectangle is inclined to one side of the rectangle at 35°. The acute angle between the diagonals is:
→
The mean of the marks scored by 50 students was found to be 39. Later on it was discovered that a score of 43 was misread as 23. The correct mean is:
  1. 35.6
  2. 39.4
  3. 39.8
  4. 39.2
→
In a $\triangle\text{ABC},$ if $\angle\text{A} = 60^\circ, \ \angle\text{B} = 80^\circ$ and the bisectors of $\angle\text{B}$ and $\angle\text{C}$ meet at O, the $\angle\text{BOC} =$
→
In the given figure PQ = QR = RS and $\angle\text{PTS}=75^\circ$ then the measure of $\angle\text{QOR}$ is:
→