- What angle is 7 o clock?
- How long is a 90 minute?
- What is the difference between degrees minutes and seconds?
- What are degrees minutes seconds?
- Who decided 24 hours in a day?
- How many degrees is 60 minutes?
- How many is 180 minutes?
- Why are there 60 seconds in a minute and not 100?
- What is smaller than a degree?
- Why is a circle 360 degrees and not 100?
- What angle is 1 o clock?
- How many minutes is 60?
- How many hours exactly is a day?
- How many degrees is one minute on a clock?
- How many degrees are in an hour?
- Who invented 60 minutes in an hour?
- How many degree does an hour hand move in 20 minutes?
- How many degrees does the Earth turn in 1 hour?
- How many degrees does the hour hand turn in 30 minutes?
- What angle is 2 o clock?
- How much is 180 seconds?

## What angle is 7 o clock?

At 7’o clock, the minute hand is at 12 and the hour hand is at 7 i.e.

the minute hand is 210 degrees behind the hour hand (going clockwise).

In 20 minutes (i.e.

at 7:20), it makes up 330*20/60 = 110 degrees..

## How long is a 90 minute?

1.5 hours90 minutes equals 1.5 hours.

## What is the difference between degrees minutes and seconds?

There are many different ways to represent latitude and longitude, for example in decimal degrees or in degrees, minutes, and seconds. A degree is 1/360 of the arc of a circle, a minute is 1/60 of a degree, and a second is 1/60 of a minute.

## What are degrees minutes seconds?

The degree is divided into sixty parts called minutes. These minutes are further divided into sixty parts called seconds. … Each degree is split up into 60 parts, each part being 1/60 of a degree. These parts are called minutes. Each minute is split up into 60 parts, each part being 1/60 of a minute.

## Who decided 24 hours in a day?

Our 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured with devices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb. “Night-time was divided in 12 hours, based on the observations of stars.

## How many degrees is 60 minutes?

Answer. When we measure time, we divide each HOUR into 60 equal parts called “minutes”, and each minute into 60 equal “seconds”. We also do the same thing when we measure angles, so that each DEGREE is divided into 60 minutes, and each minute OF ANGLE is divided into 60 seconds.

## How many is 180 minutes?

180 minutes equals 3 hours.

## Why are there 60 seconds in a minute and not 100?

Who decided on these time divisions? THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.

## What is smaller than a degree?

121600. A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol. , is a unit of angular measurement equal to 160 of one degree. Since one degree is 1360 of a turn (or complete rotation), one minute of arc is 121600 of a turn.

## Why is a circle 360 degrees and not 100?

Why Is A Full Circle 360 Degrees, Instead Of Something More Convenient, Like 100? A full circle is 360 degrees because of the Babylonian’s usage of the sexagesimal system, number of days in a year and also because 360 is highly composite.

## What angle is 1 o clock?

30°So the angle between the hands of a clock at 1 o’clock is 30° . Note: It doesn’t matter whether we are talking about 1 am or 1 pm, the answer is exactly the same for both. The angle between the hands at 1 o’clock could also be given as the reflex angle 330°, but we will always give the smaller (acute or obtuse) angle.

## How many minutes is 60?

Hours to Minutes Conversion TableHoursMinutes1 Hour60 Minutes2 Hours120 Minutes3 Hours180 Minutes4 Hours240 Minutes20 more rows

## How many hours exactly is a day?

23 hoursAnother way to measure a day is to count the amount of time it takes for a planet to completely spin around and make one full rotation. This is called a sidereal day. On Earth, a sidereal day is almost exactly 23 hours and 56 minutes.

## How many degrees is one minute on a clock?

A method to solve such problems is to consider the rate of change of the angle in degrees per minute. The hour hand of a normal 12-hour analogue clock turns 360° in 12 hours (720 minutes) or 0.5° per minute. The minute hand rotates through 360° in 60 minutes or 6° per minute.

## How many degrees are in an hour?

Please share if you found this tool useful:Conversions Table1 Hour Angles to Degrees = 1570 Hour Angles to Degrees = 10502 Hour Angles to Degrees = 3080 Hour Angles to Degrees = 12003 Hour Angles to Degrees = 4590 Hour Angles to Degrees = 13504 Hour Angles to Degrees = 60100 Hour Angles to Degrees = 150011 more rows

## Who invented 60 minutes in an hour?

The Babylonians made astronomical calculations in the sexagesimal (base 60) system they inherited from the Sumerians, who developed it around 2000 B.C. Although it is unknown why 60 was chosen, it is notably convenient for expressing fractions, since 60 is the smallest number divisible by the first six counting numbers …

## How many degree does an hour hand move in 20 minutes?

10 degreesFor a minute, the hour hand rotates by 30/60 = 1/2 degrees. hence, for 20 minutes it rotates by an angle of 20*1/2 = 10 degrees.

## How many degrees does the Earth turn in 1 hour?

15The earth turns once on it’s axis in 24 hours. This rotation is a full 360 . So, in one hour, the earth turns 15 . Every four minutes, the earth has turned one degree.

## How many degrees does the hour hand turn in 30 minutes?

An hour hand moves 1/12 of the clock (if that makes sense) in an hour. A clock is a circle with 360 degrees, so it moves 30 degrees per hour. This means that every minute it moves 30/60 degrees, or half a degree.

## What angle is 2 o clock?

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. And at 2:00, the minute hand is on the 12 and the hour hand is on the 2. The correct answer is 2 * 30 = 60 degrees.

## How much is 180 seconds?

This conversion of 180 seconds to minutes has been calculated by multiplying 180 seconds by 0.0166 and the result is 3 minutes.