Question
In the figure, ‘x° ’ and ‘y° ’ are two exterior angle measures of 
. Then x° + y° is
- 90°
- < 90°
- 180°
- > 180°
Hint:
sum of all exterior angles of a triangle = 360 degrees. sum of 2 obtuse angles is > 180 degrees.
The correct answer is: > 180°
>180
From the given diagram, we can see that angles x and y are obtuse angles, i.e., both are > 90 degree.
Therefore, their sum, x+ y > 90 + 90 or x + y > 180 degrees.
if one of the angles were acute then we'd not have been able to conclude whether the sum of the angles were greater than or less than 180 degrees.
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is
Differentiation is the process of determining a function's derivative. The derivative is the rate at which x changes in relation to y when x and y are two variables. A constant function has zero derivatives. For instance, f'(x) = 0 if f(x) = 8. So the derivative function is odd.
If , then is
Differentiation is the process of determining a function's derivative. The derivative is the rate at which x changes in relation to y when x and y are two variables. A constant function has zero derivatives. For instance, f'(x) = 0 if f(x) = 8. So the derivative function is odd.
is
