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Why is 90 degrees taken as angle of reference in trigonometry?
It is not. The angle of reference is 2*pi radians or 360 degrees.
What is the reference angle for an angle with a measure of 175?
5 dgs
Which type of angle has a 133 degree?
An obtuse angle.
What is a 213 degree angle?
An angle of 213 degrees is a reflex angle
Find the reference angle for the angle 59 degrees?
90 degrees
What does a 140 degree angle look like?
A 140 degree angle is about half way between a 90 degree angle, which has lines that are perpendicular to each other, and a 180 degree angle, which is a straight line. A 140 degree angle is an obtuse angle which has a line a little over half way between the 90 degree and 180 degree angles.
What is 140 degrees angle called?
A 140 degree angle would be called an obtuse angle.
Show shape of 140 degree angle?
140 degrees
What is the complementary angle of 140 degrees?
No angle can be complementary to a 140 degree angle, as the sum of complementary angles is 90 degrees. But angles which are supplementary to each other add together to form a 180 degree angle.
What is the measure of the supplement of a 140 degree angle?
40 degrees ( 180 - 140 = 40 )
The supplementary angle of a 40 degree angle has how many degrees?
140
Why is 90 degree not taken as the angle of reference in trigonometry?
The angle of reference is in the first quadrant, and 90 degrees angle is not in the quadrant.
What is the reference angle for an angle with a measure of 175 degree?
5 degrees
What is the reference angle for an angle with a measure of 331 degree?
29 degrees
Right triangle 140 degree angle?
In a right triangle the greatest angle is 90 degrees.
What is the reference angle for -140 degrees?
in order to find the reference angle, an angle less than or equal to 90 degrees formed by the x-axis and the terminal side of an angle, one needs to first find what quadrant on the coordinate plane the angle belongs to. The negative (-) sign in -140 refers to the direction 360 degree turn begins at (and therefore the quadrant it begins at). Instead of taking the regular backwards "C", counterclockwise direction, the turn begins clockwise. To convert it, simply add 360 degrees, to get 220 degrees, an angle in the third quadrant. These are the guidelines to follow when finding reference angles: If angle, A, is in first quadrant then the reference angle will be itself as it is already 90 degrees or under. If angle, A, is in second quadrant then the reference angle will be 180 - A . If angle, A, is in third quadrant then the reference angle will be A - 180 . If angle, A, is in fourth quadrant then the reference angle will be 360 - A " These subtractions are all in reference to the nearest angle of a quadrant and are in degrees. Being in the third quadrant, take the angle, A, and subtract 180 from it to get: 220 - 180 = 40 Thus, the reference angle for -140 degrees is 40 degrees. Follow the same directions for other angles, first determining whether the angle needs to be converted into a positive value (counterclockwise), then locate the quadrant and use the rules above for the specific angle(s) being looked at and asked for.
Can you draw an angle of 70 degree without protractor?
Yes by bisecting an angle of 140 degrees with a compass
