looks like a crotch
It's a 50 degree angle. It's an angle that measures 50 degrees. It's the complementary angle of a 40 degree angle.
90 degrees
Unless you are ready for some complicated trigonometry, I would suggest that you use a protractor and draw a 50 degree angle BEYOND a right angle.
We assume A is the angle between the boards where they meet.A = (180 - 50 - 50) = 80 degrees.
It is 40 degrees
It's a 50 degree angle. It's an angle that measures 50 degrees. It's the complementary angle of a 40 degree angle.
The supplement of a 50-degree angle is found by subtracting the angle from 180 degrees. Therefore, the supplement is 180 - 50 = 130 degrees. Thus, a 130-degree angle is the supplement of a 50-degree angle.
the cotangent of a 50 degree angle is -3.678 This is in Radians. The cotangent of a 50 degree angle is .8391 (rounded) degrees.
Any polygon can have a 50-degree angle. It doesn't have to, but it can.
A 40 degree angle is the COMPLEMENT of a 50 degree angle.
Any angle under 90 degrees is an acute angle. Any angle greater than 90 degrees and less than 180 is an obtuse angle. So a 50 degree angle would be an acute angle.
The complement of a 40-degree angle is found by subtracting the angle from 90 degrees. Therefore, the complement is 90 - 40 = 50 degrees. This means that a 50-degree angle, when added to a 40-degree angle, will equal 90 degrees.
90 degrees
It is an isosceles triangle because the third angle must measure 50 degrees
Acute angle
cos(50) = 0.6428 (rounded)
cotangent(50) = 1/tangent(50) = 0.8391