## anonymous one year ago cos^2 - sin^2X ------over------ 1 - tan^2 X

1. Nnesha

$\huge\rm \frac{ \cos^2 x- \sin^2x }{ 1-\tan^2x}$

2. anonymous

3. Nnesha

can you please tell me how u got cos^2x :=) thanks!

4. anonymous

do i have to

5. Nnesha

hmm just wanted some explanation you can explain in words like what ws ur first step

6. anonymous

cos^2 x - sin^2 x cos^2 x -sin^2 x cos^2 x - sin^2 x -------------------- = --------------------- = ---------------------- 1 - tan^2 cos^2 x sin^2 x cos^2 x - sin^2 x -------- - --------- ----------------------- cos^2 cos^2 cos^2 x cos^2 - x - sin^2 cos^2 x = ------------------------- x -------------- = cos^2 x 1 cos^2 -sin^2 x

7. Nnesha

PERFECT!

8. anonymous

thanks

9. Nnesha

thanks for showing ur work and you can use equation tool great job!

10. anonymous

yea i'm new so i don't really know how to use this yet

11. Nnesha

yeh i understand let me know if you have any question abt equation tool i can help :=)

12. Nnesha

13. anonymous

ok thanks

14. Nnesha

np :=)