Parenthesis according to the PEMDAS rule
So
7(x - 4) = 84
Would be
7x -28 = 84
Hope this helped :)
Notice the picture, the radius is just the distance from the
center to a point on the circle, thus
There needs to be a picture of the whole worksheet for me to answer. But you can go to the website at the bottom of the sheet and most likely find a answer key.
Answer:
Step-by-step explanation: sec^2A-tan^2A+1
=1+1
=2