Therefore, \( \angle A + \angle B + \angle C = 180^{0}\) [Sum of the angles of a triangle]

The second cell is disposed so as to form an angle b between the second cell and the first cell and so as to form the angle a + the angle b between the second cell and the supporting substrate.

Example: Find the complement of angle B whose measure is 30 degrees:

Example: Find the supplement of angle B whose measure is 40 degrees:

Example: Find the supplement of angle B whose measure is 40 degrees:

Otherwise, a convention may be adopted so that ∠BAC always refers to the anticlockwise (positive) angle from B to C, and ∠CAB to the anticlockwise (positive) angle from C to B.

Otherwise, in a conference call counterclockwise direction (positively) angle of angle can be applied so that §BAC always refers to counterclockwise SEB (positive) angle, and refers to C.B on ∠

the complement of an angle B is whatever size is necessary so that, if you stick them together, they make a 90 degree angle.

The pouring nozzle is provided with two bearing faces forming with the pouring channel an angle β of 20° to 80°.