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

Question

highschoolmom2010 · Answer

attachment

jhonyy9 · Answer

do you know sin45 = ?

jhonyy9 · Answer

value numeric

highschoolmom2010 · Answer

no clue ^^

jhonyy9 · Answer

why you needed learning it sure

jhonyy9 · Answer

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

highschoolmom2010 · Answer

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

highschoolmom2010 · Answer

@jhonyy9  ive never done that before

highschoolmom2010 · Answer

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

jhonyy9 · Answer

sin45 = sqrt2 /2

jhonyy9 · Answer

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 ?

phi · Answer

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

highschoolmom2010 · Answer

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

jhonyy9 · Answer

yw