Answer:

Step-by-step explanation:
Here we see tan(B) has opposite side of 12 and adjacent of 9
using the formula:



Answer:
Step-by-step explanation:
4 because as shown below. An equilateral triangle has 3 lines of symmetry.
That's a bit of a nasty. Where ever you see (x^2 + 6) you put in p.
p^2 - 21 = 4(x^2 + 6)
p^2 - 21 = 4p
p^2 - 4p - 21 = 0
A <<<< answer.
First one = y6
second one = y -3
third one = y0
fourth one = y8