Actually Welcome to the concept of Angle sum property of a triangle.
To form a triangle, all angles must sum exactly to 180°.
So the correct options are :-
1.) 86°, 53°, 41°
4.) 54°, 97° , 29°
5.) 33° , 90° , 57°
4x+5y=6 and 6x-7y=-20
1 answer:
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To solve for the radius(r), you need to isolate/get the radius by itself in the equation:
Multiply the inverse of 1/2, which is 2/1 or 2 on both sides
2A = πr² Divide π on both sides
Now square root √ both sides to get "r" by itself
Your answer is A