## Wondermath 4 years ago A mass of 30 kg is supported from above as shown in the figure. To the nearest Newton, what is the tension in wire 1? In wire 2?

1. Wondermath

2. Wondermath

i got the two equations but if i convert the sin thetas to decimals then the final answer wouldn't be accurate

3. Wondermath

let me write the equations

4. Wondermath

T1sin30+T2sin60=294 T1cos30-T2cos60=0

5. Wondermath

how do i solve this without converting the sin and cos to decimals?

6. anonymous

In fact you don't need to convert them.Just try so solve a quadratic equation which you have found.

7. anonymous

you have to keep it on your calculator and round at the very end

8. Wondermath

really? :O

9. anonymous

$\sqrt{3/2}T _{1}=1/2T _{2}$ and also $1/2 T _{1}+\sqrt{3/2}T _{2}=294$

10. Wondermath

how do i make it into a quadratic equation? first of all my equations are right, right?

11. Wondermath

oh

12. anonymous

do you know special triagnles? and sohcahtoa?

13. Wondermath

yeah

14. anonymous

Yeah your equations are right.

15. Wondermath

oh okay thanks!

16. anonymous

its through that that s.t.mono got that

17. anonymous

if you want I can also solve it but it's better you yourself go through it