## msingh 2 years ago find sintheta

1. msingh

2. shubhamsrg

Can you write this expression as : sin@ + sqrt(sec^4 a) = sec^4 a ? (@ = theta a = alpha)

3. ParthKohli

Deja vu.

the key is in the infinite.

5. sauravshakya

|dw:1359202205624:dw|

6. ParthKohli

$\sec^4 \alpha = \sin\theta + \sec^3 \alpha$Nice

7. sauravshakya

So, sin(theta) =sec^4(alpha) -sec^3(alpha)

8. ParthKohli

Nice!

9. msingh

|dw:1359204540645:dw|

10. msingh

how this came

11. Yahoo!

put y = sec ^4 theta

12. Yahoo!

|dw:1359205220430:dw|

13. msingh

how, i didn;t understand

14. Yahoo!

$\sin \theta = \sec^4\theta \pm \sec^2 \theta$

15. msingh

its secθ or secalpha

16. sauravshakya

I guess I did a mistake

17. Yahoo!

Sorry Alpha

18. msingh

|dw:1359205684540:dw|

19. sauravshakya

|dw:1359205682988:dw|

20. msingh

|dw:1359205748804:dw|

21. msingh

x^2-x+x=sec^4alpha x^2=sec^4alpha x=sec^2alpha

22. msingh

if we put the value of sintheta in given equation, we get, |dw:1359205875734:dw|

23. sauravshakya

x^2 =sec^4alpha x=+- sec^2 alpha

24. msingh

yes, u r right after that putting the value of x in x^2-x=sintheta

25. sauravshakya

yep

26. msingh