Bllowing.
Two angles of a triangle are int
find the angles of the triangle.
of a triangle are in the ratio 4:5. If the sum
If the sum of these angles is equal to the third angle,
The length of a rectangle exceeds its breadth by 70
adth is increased by 3cm, the area of the new
gre. Find the length and breadth of the original rec
idth by 7cm. If the length is
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Let the measure of two angles be 4x and 5x and the third one is ( 4x + 5x ).
We know that ;
Sum of angles of triangle = 180°
⇒ 4x + 5x + 4x + 5x = 180
⇒ 18x = 180
⇒ x = 180/18
⇒ x = 10
Therefore, the angles are ;
4x = 4 * 10 = 40°
5x = 5 * 10 = 50°
9x = 9 * 10 = 90°
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