2/cos x
........................
Remember, you take 1/2 of b and square it to get c
c=100
(b/2)^2=c
(b/2)^2=100
sqrt oth sides
b/2=+/-10
times both sides by 2
b=+/-20
it is 20 or -20
answe ris B
yo is right
Answer:
1. R and Z 2. AC and AE
Step-by-step explanation:
12 not sure if it's true or not.
Answer:
Draw an open circle at 4
Step-by-step explanation:
