The sum of an angle and one third of its supplementary angle is 90∘. The measure of the angle is(a) 135∘(b) 120∘(c) 60∘(d) 45∘

The sum of an angle and one third of its supplementary angle is 90∘.

1.	The sum of an angle and one third of its supplementary angle is 90∘. The measure of the angle is(a) 135∘(b) 120∘(c) 60∘(d) 45∘
Answer» The sum of an angle and one third of its supplementary angle is $90^{\circ}$ . The measure of the angle is (a) $135^{\circ}$ (b) $120^{\circ}$ (c) $60^{\circ}$ (d) $45^{\circ}$