Question

C^2=a^2+b^2, solve for B

Answer 1

subtract a^2
c^2-a^2=b^2
take the square root of each side
\[\sqrt{c ^{2}-a ^{2}}\]=\[\sqrt{b ^{2}}\]
b= \[\pm \sqrt{c ^{2}-a ^{2}}\]

Answer 2

1 more, 1/r=1/r1+1/r2; r2 (solve for r2)

Answer 3

is the r1 and r2 r^1 and r^2?

Answer 4

no

Answer 5

no nevermind

Answer 6

ok

Answer 7

multiply each side by r2
r2/r=1/r1
multiply each side by r
r2=r/r1

Answer 8

thanks