Question

in supplementary angle,if first angle is 20less than second angle ,then the larger angle is equal to?​

Answer 1

Let the first angle be x° and the second angle be (x+20)°.

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20or, 2x = 160

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20or, 2x = 160or, x = 160/2

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20or, 2x = 160or, x = 160/2or, x = 80°

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20or, 2x = 160or, x = 160/2or, x = 80°

Let the first angle be x° and the second angle be (x+20)°.x+x+20 = 180 [Since it is given a complementary angle]or, 2x + 20 = 180or, 2x = 180-20or, 2x = 160or, x = 160/2or, x = 80° Therefore, the first angle is 80° and the second angle is (80+20)°=100°

Answer 2

Answer:

100

Step-by-step explanation:

let the smaller angle be x,

and larger angle be y.

We know that sum of supplementary angles is 180°,

therefore,

x+y= 180°

x= y-20°(given)

putting the value of x as y,

y-20°+y= 180°

2y-20°= 180°

2(y-10°)= 180°

y-10°= 90°

y=100°

and x= 80° (y-20°)