Angles on the clock
Can't we write numbers
from 1 to infinity, including zero?
Although angles are
also numbers, angles can only be written from zero to 360.
If there are no more
angles than 360, then if it rotates beyond that, it will be the next rotation.
Only 360 degrees can be
measured per rotation. Why is it so that one round is separated only up to 360.
If you don't want to divide more than that, you can divide freely. Splitting up
to 360 has become a tradition and has become the norm.
No matter how you turn
around, you can only turn around in circles. Take the rotation of the fan. Is
it a circle? Take a round of the clock. Is it a circle? Take a rotation of the
wheel. Is it a circle?
This circle is divided into
360. That is, they divide a circle by 360 and take the angle measure as 360. Do
I also need to say that we should mark 3600 as the angle measure?
A clock is very
convenient to understand angular rotation.
Take 12.00 o'clock on
the clock. Isn't this the beginning of the clock? 12 o'clock is the same as
zero for a clock.
Exactly 12 o'clock is
the beginning. Isn't it zero? It is zero angle. Mark this as 00.
So how do you denote a
complete rotation of 3600 then it is called complete angle or full
angle. The angular scale ends there doesn't it!
Since the clock can
display 12 hours, divide it by four. That is, divide 12 into four. If we
analyze it like that, the first part of 12 is 3? Second part is 6? Third part 9
itself? Part 4 is 12?
Now observe the numbers
3, 6, 9, 12 of the clock. Do these numbers divide the clock into four?
When the clock hand,
whether it is second hand, minute hand or hour hand, reaches 3, it means that
it has reached one fourth of 3600 degrees. That means 3600
/ 4 = 900 is reached. This is called a right angle. That is
one-fourth of full angle. Its shape is in the form of the English letter L.
Even if viewed in a circular form, it is a quarter. i.e. the quarter circle.
So reaching 6 means
reaching half of 3600. 3600 / 2 = 1800. This
is called a straight angle. It is in the form of the English letter I. If seen
in circular form, it is a half section. It means semi circle.
So reaching 9 means
reaching three quarters of 3600. 3600 × ¾ = 2700.
There is no special name for this angle. In circular form it is three quarters.
It means three-quarter circle.
Then again when 12 is
reached a cycle is complete. That is reaching an angle of 3600. It
is a complete or full angle. If viewed in a circular form, it becomes complete
and becomes a full circle.
I think now you have a
better understanding about angles.
Are you wondering if we
can use these angles to calculate direct ratios?
Let's see that next.
*****
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