Question

please answer to this attachment​

Answer 1

Answer:

2 )

because there is no triangle which have sum of interior angle less than 180

Explanation:

1 ) A = { -2 ,2 ,3 }

2 ) SET IS EMPTY

Answer 2

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1 ] °°° Solution °°°

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Correct option is A 2

Given equation is  3x2:3x=9:1

=>3x3x2=132

By using law am÷an=am−n 

=>3x2−x=32

As base is same, we can equate the powers,

⇒x2−x=2

⇒x2−x−2=0

⇒x2−2x+x−2=0

⇒x(x−2)+(x−2)=0

⇒(x−2)(x+1)=0

⇒x=2    or   x=−1

⇒x=2 satisfies the condition

2 ]°°° Solution °°°

verified Verified by Toppr

U = Set of all triangles in a plane

A = Set of all triangles with at-least one angle different from 60 o

A = Set of all triangles with no angle different from 60 o

= Set of all triangles with all three angles 60 o

( As, in an equilateral triangle, all angles are 60 o )

= Set of all equilateral triangles