Explanation: First note that a clock is a circle made of 360 degrees, and that each number represents an angle and the separation between them is 360/12 = 30.
How many right angles are in an hour?
Each full circle contains 2 right angles (90 and 270). So answer is 22*2 = 44. 4 times? Each hour has 2 occurrences of 90 degrees.
How many right angles are formed when clock shows 9 o clock?
The 15 degrees comes from the fact that the 9 o clock hand is not exactly on 9 anymore but between 9 and 10. from 9 to 12 = 90 degrees, so from 9 to 10 is 90/3=30 degrees, so from 9 to 9:30 = 30/2 = 15 degrees.
How many clock angles are 180 degrees?
Step-by-step explanation: The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours. (Because between 5 and 7 they point in opposite directions at 6 o’clcok only). So, in a day, the hands point in the opposite directions 22 times.
What is the time between a 9 and 10 clock?
Explanation: To be together between 9 and 10 o’clock, the minute hand has to gain 45 min. spaces. 55 min.
What is the angle of 180 degree?
straight angle
The angle which measures 180 degrees is named the straight angle….Table of Angles.
| Acute angle | 0° < θ < 90° |
|---|---|
| Straight angle | θ = 180° |
| Reflex angle | 180° < θ < 360° |
| Full rotation | θ = 360° |
How many 1 turns do you need to create a 180 degree angle?
A straight line creates a 180 degree angle. It is equal to one-half a rotation around a circle.
At what time between 9 o’clock and 10 o’clock be in the same straight line but not together?
At 9 o’clock, the hour hand is at 9 and the minute hand is at 12. it means that the two hands are 15 min spaces apart . To be in the same straight line (but not together ), they will be 30 min space apart .
At what time in minutes between 3 o’clock and 4 o’clock both needles will coincide each other?
At what time, in minutes, between 3 o’clock and 4 o’clock, both the needles will coincide each other? Explanation: At 3 o’clock, the minute hand is 15 min.
Why is 12 at the top of the clock?
Once the moving-hand clocks came about, the clockwise rotation of the hands was because that is the way a shadow moves around a sundial. And 12 represents noon, when the sun is highest in the sky, so the 12 was placed at the highest point of the dial.
