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

1. highschoolmom2010

2. jhonyy9

do you know sin45 = ?

3. jhonyy9

value numeric

4. highschoolmom2010

no clue ^^

5. jhonyy9

why you needed learning it sure

6. jhonyy9

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. jhonyy9

sin45 = sqrt2 /2

11. jhonyy9

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. jhonyy9

yw