0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
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
Why second and third angle projections not used in orthographic projections?
because 2nd and 4th angle projection overlap each other
Why drawings are not drawn in second and fourth angle projection?
because in 2nd and 4th angle,both the view is going to overlap with each other,so we cant able to visualise the drawing properly,so we are not drawing in 2nd and 4th angle. kash answer kash_115@yahoo.com
Why do you not use second angle projection and fourth angle projection?
Method of Projections tell us the positions of the views where they are projecting on the Planes. Consider 1st Angle of projection, All the views from a particular direction are projected on the opposite side, while in 3rd Angle of projection, All the views from a particular direction are projected on the same side. Take a case of 2nd Angle of Projections( means object lies in 2nd Quadrant) since the image is to be formed on the planes only that is why we have to keep right side view on the same side from viewing while top view on the opposite side from viewing. This contradicts view placement( i.e. once you are placing on same side and once on Opposite). Same is applicable in 4th Angle of Projection also.
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
Why can not we use second angle projection method in Engineering drawing?
In 1st angle projection the front view will be in the top of the xy plane and the top view will be in the bottom of the xy plane .In 3rd angle projection the top view will be in the top of the xy plane and front view will be in bottom of the xy plane. dis will give a clear view.i hope u know dis... but in 2 angle projection both the views(front and top) will be in the top of the xy plane and in 4th angle projection both the views (front and top) will be in the bottom of the xy plane... since both the views will be in one side of the xy plane, its not possible to draw... both views will merge... to get more clear view, refer any basic engineering drawing book.......
How do you find the angle of a quadrilateral if your using 3 angles and you don't know one of the three angless on it?
A quadrilateral has 4 interior angles that add up to 360 degrees and to find the unknown 4th angle while knowing the other 3 angles simply add them up and subtract the sum from 360 to find the 4th angle
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.
What is the ans for a quadrilateral three angle measure 82 78 90?
The 4th angle is 110.
How do you find the last angle of a quadrilateral?
Subtract the 3 known angles from 360 to find the 4th angle.
In what order do you turn on the lanterns on Skullduggery Island?
At Golden Harbor, you can turn the lanterns on 4th, 2nd then 1st. Or you can turn them on 2nd, 4th, then 1st. Turning on the 2nd or 4th will turn out the 1st if it is already lit.
What is the calendale?
Starts December 4th and continues to the Candlemass on Febuary 2nd. Starts December 4th and continues to the Candlemass on Febuary 2nd.
