## highschoolmom2010 3 years ago Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

1. highschoolmom2010

2. anonymous

do you know sin45 = ?

3. anonymous

value numeric

4. highschoolmom2010

no clue ^^

5. anonymous

why you needed learning it sure

6. anonymous

ok but hope you know that the sinus of an angle is equal opposite side divide hypothenuse yes ?

7. highschoolmom2010

$10=\sqrt{2}*x$ $x=\frac{ 10 }{ \sqrt{2}}$ $x=\frac{ 10 }{ \sqrt{2} }*\frac{ \sqrt{2} }{ \sqrt{2} }$ $x=\frac{ 10\sqrt{2} }{ 2 }$ $x=5\sqrt{2}$

8. highschoolmom2010

@jhonyy9 ive never done that before

9. highschoolmom2010

"but hope you know that the sinus of an angle is equal opposite side divide hypothenuse"

10. anonymous

sin45 = sqrt2 /2

11. anonymous

so than using this you can rewriring it sqrt2 x ---- = ----- 2 10 cross multiplie 10sqrt2 = 2x divide by 2 and will get x = 5sqrt2 right ?

12. phi

yes, you did it correctly. Jhonny is using trigonometry, which you have not studied yet

13. highschoolmom2010

thats my next lesson...... :D cool so i understand it :DD ty @phi @jhonyy9

14. anonymous

yw