Question

3. The ratio of the sides of a triangle is 3:5 : 7. What is the difference
between double of the smallest angle and half of the greatest angle?
(a) 25°
(b) 36°
(c) 38°
(d) 30°
(e) None of these
(Union Bank Clerk 2010)
14. The ang
between
(a) 75°
(d) 80°
+hanitowidth Teoritos​

Answer 1

Answer:

let the side of angle be x

3x+5x+7x=180°

15x. = 180°

x. = 180°

15

x. = 12

3x= 36°

5x=60°

7x=84°

now, find the different between double of smallest and half of greatest angle..

36×2=72°

84/2=42°

difference= 72°-42°

= 30° answer

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