3 years ago

CosX sec^2X tanX - cosX tan^3X = sinX

1 answer:

4 0

$\cos x\sec^2x\tan x-\cos x\tan^3x=\cos x\tan x\left(\sec^2x-\tan^2x\right)=\sin x\left(\sec^2x-(\sec^2x-1)\right)=\sin x$

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(x+7)(x+9) <br>Do this math problem by using the Foil method.

Setler79 [48]

Foil:
First term
Outer term
Inner term
Last term

By using foil we just times the first terms together so: x*x=x^2

Then we times the outer terms together so: x*9=9x

Then we times the inner terms together so:7*x=7x

Finally we times the last terms together so: 7*9=63

So our equation is:
X^2+9x+7x+63

Now we collect the like terms

Answer: x^2+16x+63

Hope this helped

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3 years ago

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Oduvanchick [21]

Answer:

point A is the intersection point between XA and AC

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1 year ago

2 sqrt of 3 times 3 sqrt of 15

bixtya [17]

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