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Why we don't use second angle and fourth angle projection?
So in general, to create 2 dimensional figure we need X and Y co-ordinates. So in quadrant there are 4 region. so in first region the X and Y co-ordinates will be +ve, So in 2nd X -ve and Y +ve, so in 3 rd X and Y will be -ve, and in 4th region X +ve & Y -ve. So for this reason the 2nd and the 4th quadrant the object will merge. So it will leads to some kind of error. So that's the reason we don't use 2nd and 4th angle projections. Joseph. F. B
What is an angle more than 360 degrees called for 4th graders?
a coteminal angle.
What is angle of reference in trigonometry?
This is a VERY important question and I am glad you asked it. First you have to remember that in drawing angles we think of 4 quadrants. Think of the XY plane - the first quadrant is where BOTH X and Y are positive. In the 2nd quadrant the X is negative and the Y is positive. In the 3rd quadrant the X and the Y are negative. In the 4th quadrant the X is positive and the Y is negative. Normally when we draw an angle we draw an angle less than 90 degrees. However, we can draw any angle we want from 0 to 360. However that angle can be represented by an angle less than 90 degrees in a certain quadrant. Take an angle like 120 degrees. That angle is the same as a 60 degree angle in the 2nd quadrant. A 210 degree angle is the same as a 30 degree angle in the 3rd quadrant. A 359 degree angle is the same as a 1 degree angle in the 4th quadrant. Those smaller angles are reference angles. This explanation would be better if I could insert graphs. I have attached a link to a picture. Alpha is the angle and Beta is the reference angle.
How many degrees are in one fourth of a right angle?
A right angle is 90 degrees. 1/4th of 90 is 22.5 degrees.
What is the fourth angle of 100. 80. 100?
If those are the angles of a quadrilateral then the 4th angle is 360-100-80-100 = 80 degrees
