1.

Two complementary angles are in the ratio 7 : 8 the angles are (a) 30°, 60° (b) 40°, 50° (c) 42°, 48° (d) 27°, 63°

Answer» (c) Let the angles be 7x and 8x given angle are

complementary to each other.

7x + 8x = 90°

15x = 90°

x = 6°

7x = 7 × 6° = 42°, 8x = 8 × 6° = 48°


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