Question
Sat August 04, 2012 By: Prasun Bairagi
Q1   if x = sin^14a + cos^20a, then write the smallest interval in which the value of x lie .
 
Q2   if sina + sinb + sinc = 3 then write the value of cosa + cosb + cosc .
 

to find out

Expert Reply
Mon August 06, 2012
We would request you to please ask one question at a time. The solution to your first question is as follows:
 
 
We know that the value of sin a and cos a lies between 0 and 1.
So, we have:
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