1. ByteMe Group Title

divide both sides by 6 so your equation is now: tanx - cotx = 0 let's use "x" instead of "theta"... easier to type...

2. Sona Group Title

ok....tanx-cotx=0 then wat?

3. ByteMe Group Title

try writing the equation in terms of only sin and cos....

4. Sona Group Title

ok is 45 135 225 n 315 the solutions?

5. ByteMe Group Title

idk... i didn't solve.... yet.... maybe these guys will...

6. ChmE Group Title

$\tan \theta = \cot \theta$$\frac{ \sin \theta }{ \cos \theta }=\frac{ \cos \theta }{ \sin \theta }$$\sin^2 \theta=\cos^2 \theta$

7. ChmE Group Title

$\sin \theta = \cos \theta$they only equal the same value at 2 different degrees ( or radians). Are you familiar with the unit circle

8. Sona Group Title

yes

9. ChmE Group Title

10. Sona Group Title

ok i just got it thank u all!

11. ChmE Group Title

hold on. i think you were right above

12. ChmE Group Title

if each term is squared then there wil be no negative numbers

13. ChmE Group Title

and you will have 4 solutions

14. ChmE Group Title

45, 135, 225, 315

15. Sona Group Title

yup

16. ChmE Group Title

Good job

17. Sona Group Title

thank u tho

18. tamtoan Group Title

when you have (sin^2)(x) = (cos^2)(x) ....use (cos^2)(x) = 1 - (sin^2)(x) and substitute in, you then can solve because now you only have one variable ... ** i don't know to to write in the form like chme does, or else, it would look much easier.

19. ChmE Group Title

its the equation button below the this text field.

20. tamtoan Group Title

i got it, thanks @chme very much