2 years ago

Please help me I've been stuck on this for days now and I can't get an answer now my last choice is brainly Guy please help me

1 answer:

7 0

Answer:

you have to earn great to be great

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Rudiy27

Answer:

Step-by-step explanation:

For simplicity I will substitue $x$ for β.

$1-sin(2x)=(cosx-sinx)^2\\1-2sin(x)cos(x)=cos^2x-2sin(x)cos(x)+sin^2x\\1=cos^2(x)+sin^2(x)\\1=1$

In the first step I used the identity

$sin(2x)=2sin(x)cos(x)$

And I factored out $(cosx-sinx)^2$

Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

$cos^2(x)+sin^2(x)=1$

That's it!

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2 years ago

siniylev [52]

I reduced the equation to a - 6 (2/3)

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3 years ago

melamori03 [73]

For a rectangle, A = LW.

A = (3x + 2)(x - 4)

A = 3x^2 - 12x + 2x - 8

A = 3x^2 -10x - 8

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3 years ago

Lyrx [107]

Answer:

1000

Step-by-step explanation:

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3 years ago

vladimir2022 [97]

Answer:

Step-by-step explanation:

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3 years ago