Mathematics: Which expression is equal to the example?

Which expression is equal to the example?

Ответ:

keshewar2671

21.01.2022

Mathematics

1-(cosx)^4 value is 2sin^4-sin^4x . Correct option is D) .

Step-by-step explanation:

Here we have , expression to evaluate:

1-(cosx)^4

⇒ 1-((cosx)^2)^2

⇒ 1-(1-(sinx)^2)^2

We know that , sin^2x = 1-cos^2x , putting value in equation 1-(1-(sinx)^2)^2

⇒ 1-(1+sin^4x-2sin^4)

⇒ 1-1-sin^4x+2sin^4

⇒ -sin^4x+2sin^4

⇒ 2sin^4-sin^4x

Therefore , 1-(cosx)^4 value is 2sin^4-sin^4x . Correct option is D)

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Ответ:

blaqsafire404

17.04.2020

Mathematics

You can go to their profile by clicking their profile picture in a question they asked or answered and then you can click the flag button and report them. Hope this helps :)

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Which expression is equal to the example?

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