We are to select 2 people to sit in first row from 6.
This is a problem of Combinations. We are find permutation of 6 people taken 2 at a time. This can be represented as 6C2.
So, the answer is option B
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The area of triangle ABC applying the law of sines is equal to

substitute the given values


B.) 173 degrees
the answer is B
I think it is 70 but not sure
Answer: I would say it’s (0,-2) for the answer.
Step-by-step explanation: