Q .Show  that 3(sinx-cosx)^4+6(sinx+cosx)^2+4(sinx^6x+cos^6x)=13. 

Asked by Balbir | 1st Feb, 2017, 02:33: PM

Expert Answer:

So, adding (i), (ii) and (iii), we get the required.

Answered by Rebecca Fernandes | 1st Feb, 2017, 02:51: PM