An angle is thrice its complementary angle. What is the measure of the angle?
Let the angle = $$\theta$$
Its complementary angle = $$(3\theta)$$
Sum of an angle and its complementary angle = 90°
=> $$\theta + (3\theta) = 90$$°
=> $$4 \theta = 90$$°
=> $$\theta = \frac{90}{4} = 22.5$$°
$$\therefore$$ Measure of the angle = $$3 \times 22.5 = 67.5$$°
=> Ans - (D)
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