Answer:
a = 63˚
Step-by-step explanation:
1. Recognize that any triangle = ∑180˚
2. 180-81-b-a=0
3. 180-117=63˚
The answer is 498530
= (3 + √3) (2 - √3)
= 6 - 3√3 + 2√3 - 3
= 3 - 3√3 + 2√3
= 3 - √3 (3 - 2)
= 3 - √3
= 3 - 1.732 ...... (√3 = 1.732)
= 1.268
what is it asking???? it doesn't make sense
