Math Is Fun Forum

Hannibal lecter

Member

Registered: 2016-02-11

Posts: 392

Degree of angles

I always stuck in degree of angel
I don't know the meaning of 90 or 45 or 30

Is it a the length of traingle?
I am cery simple in measure i know how to measure
Area or distance using a roller
But what is 90 is it a quantity of two sides of a triangle
Sometimes i can see in my bare eyes the length of something easily
But when i see degree i get confused
Also what is sine of a degree

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Wisdom is a tree which grows in the heart and fruits on the tongue

amnkb

Member

Registered: 2023-09-19

Posts: 253

Re: Degree of angles

I always stuck in degree of angel
I don't know the meaning of 90 or 45 or 30

Is it a the length of traingle?
I am cery simple in measure i know how to measure
Area or distance using a roller
But what is 90 is it a quantity of two sides of a triangle
Sometimes i can see in my bare eyes the length of something easily
But when i see degree i get confused
Also what is sine of a degree

90 degrees is a right angle so sides meet perpendicular
45 degrees is half of that
think the angle made by  corners of a picture frame
30 degrees is a third of 90 degrees and 2/3 of 45 degrees
the numbers are just sizes of angles
you can have angles of any size ('measure')

lengths are for sides of triangles
the sides have angles between them
like if | and _ are sides then |_ makes 90 degree angle

to measure angles you use a protractor

sine of 1 degree is 0.01745240643