Answer:
a = 60
b = 60
Step-by-step explanation:
We know that BC is 90°, because of the square thingy.
YB is 30°.
Now we do 180 - 30 - 90 = 60 (180 is the straight angle)
60 = b
Then a is the same.
Use the quadratic formula, the second, the 6th answers are correct.
Answer:
³√x^4
Step-by-step explanation:
I can't see the next photo but I'm assuming that's what you're asking