Question

one angle of a triangle is 80* and the other two angles are in the ratio 1 : 3 then the larger angle is ?

Answer 1

Given :-

• One angle of a triangle is 80°
• Other two angles are in the ratio 1 : 3

To find :-

• Find the larger angle

Solution :-

As we know that

✞Sum of all angles of a trianlge is equal to 180°

Let the angles be x and 3x

✞According to the question

➩ 80° + x + 3x = 180°

➩ 80 + 4x = 180

➩ 4x = 180 - 80

➩ 4x = 100

➩ x = 100/4

➩ x = 25

Hence,

• Angles of a triangle
• x = 25°
• 3x = 3*25 = 75°

Extra Information :-

• Area of rectangle = length × breadth
• Area of square = side × side
• Perimeter of square = 4 × side
• Perimeter of rectangle = 2(length + breadth)

Answer 2

Step-by-step explanation:

$x + 3x + 80 = 180$

$4x + 80 = 180$

$4x = 180 - 80$

$4x = 100$

$x = \frac{100}{4}$

$x = 25$

$3x = 3(25)$

$3x = 75$

$x = 25$

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