## highschoolmom2010 Group Title solve for x using sin, cos, tan 11 months ago 11 months ago

1. highschoolmom2010 Group Title

2. goformit100 Group Title

ues Pytha goras theorem, or use trigonometric identities directly..... Say what you prefer most ?

3. highschoolmom2010 Group Title

$\sin 36=\frac{ 10 }{ x }$ $(x*)\sin36=\frac{ 10 }{ x }(* X)$

4. highschoolmom2010 Group Title

thats as far as i have gotten

5. highschoolmom2010 Group Title

$X \sin 36=10$

6. ganeshie8 Group Title

$$(x*)\sin36=\frac{ 10 }{ \cancel{x} }(* \cancel{X})$$

7. ganeshie8 Group Title

keep going, your target is x

8. highschoolmom2010 Group Title

how do i get x alone

9. highschoolmom2010 Group Title

do i divide by sin 36?

10. ganeshie8 Group Title

yes !

11. highschoolmom2010 Group Title

so $x=\frac{ 10 }{ \sin 36 }$

12. ganeshie8 Group Title

looks perfect !

13. highschoolmom2010 Group Title

17.01

14. highschoolmom2010 Group Title

or 17 approx

15. ganeshie8 Group Title

$$17 = \color{red}{\checkmark}$$

16. highschoolmom2010 Group Title

im unsure sometimes on how to do some steps ^^

17. ganeshie8 Group Title

you're doing great, takes lil practice thats all :)

18. phi Group Title

you got to Xsin36=10 if the problem was x*2 = 10 you would know what to do: divide both sides by 2 the reason you are unsure of what to do is you are forgetting that sin36 is just a fancy way to write down a number. You can always divide both sides by a number.