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Neeraj Kumar

· started a discussion

· 1 Months ago

about proper solution (Question: 336935.0 )

please sir provide detailed solution

Question:

If sin8 x + cos8 x – 1 = 0 where x ≠ 0 or  π2   , then what is the value of sin2 x cos2 x?  

Options:
A)

–1

B)

0

C)

1

D)

2

Solution:

Ans: (d)


Knowledge Expert

· commented

· 1 Months ago

But only if we take x=90

Knowledge Expert

· commented

· 1 Months ago

A nswer should be 0

Knowledge Expert

· commented

· 1 Months ago

Take Sin(90)^8+Cos(90)^8...taking x=90degrees
=1
Keeping x=90 in Sin^2*cos^2
=0

Naveen

· commented

· 1 Months ago

Yet to be approved!
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