# Solving

• Oct 3rd 2007, 07:41 AM
taurus
Solving
Hey i got a questions, im not sure how to solve the following equation for 't'. How would i do it?

2.4 = sqrt(2.1^2 + (0.049*t^2)^2)

Thanks
• Oct 3rd 2007, 09:28 AM
CaptainBlack
Quote:

Originally Posted by taurus
Hey i got a questions, im not sure how to solve the following equation for 't'. How would i do it?

2.4 = sqrt(2.1^2 + (0.049*t^2)^2)

Thanks

First square:

$

2.4^2 = 2.1^2 + 0.049^2 t^4
$

so:

$
t^4=\frac{2.4^2-2.1^2}{0.049^2}
$

Now find the fourth roots of the rigt hand side and check to see which solve
the original equation.

RonL