Two complementary angles, one is twice the other. The smaller is

Two complementary angles, one is twice the other. The smaller is
  1. $30^{\circ}$
  2. $60^{\circ}$
  3. $45^{\circ}$
  4. $15^{\circ}$

Solution

$x + 2x = 90 \Rightarrow x = 30^{\circ}$.

Asked in: MH-SSC-9

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