Math, asked by 2005dipjyoti, 1 month ago

If cos x + secx = 2, show that cos^8x + sec^8x = 2.​

Answers

Answered by brokenheart48
1

As we know that

X+1/X=f(X)

where f(X) lies between (-infinite, - 2] or [2,infinite)

So the above function is given like this

X+1/X=2

Here X=cosx so

Cosx=1 this is only possible when x=2npie so x=0 is the solution

So

The value of

Cos^10X+sec^20x=2

ᴮʀᴼκᴱɴ_нᴱᴀᴿᴛ

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