Let the angle = $$\theta$$
Its complementary angle = $$(2\theta)$$
Sum of an angle and its complementary angle = 90°
=> $$\theta + (2\theta) = 90$$°
=> $$3 \theta = 90$$°
=> $$\theta = \frac{90}{3} = 30$$°
$$\therefore$$ Measure of the angle = $$2 \times 30 = 60$$°
=> Ans - (C)
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