Tan(a/2) = sin a / (1 + cos a)
tan(45/2) = sin(45) / (1 + cos(45)) = (1/√2) / (1 + 1/√2) = (1/√2) / (√2 + 1)/√2 = 1/(√2 + 1) = (√2 - 1)
B is the answer
i simplified the theorem, but i hope this makes sense!
Answer:
c
Step-by-step explanation:
So if you are solving for x we have to do this
4x+6=2x+10
4x-2x=10-6
2x=4
x=4/2
x=2