Answer:
As
Hence, the option 'a' is true.
Step-by-step explanation:
Given the expression

Putting x = -5 in the expression







Therefore,
Hence, the option 'a' is true.
The sum of the angles of a triangle is 180°.
The angles you know are 28° and 36°, so you can do this to find ∠B:
∠A + ∠B + ∠C = 180°
or 28° + ∠B + 36° = 180° Add 28 and 36
64° + ∠B = 180° Subtract 64 on both sides
∠B = 116