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3 years ago

How do u take 40% off on something

Mathematics

2 answers:

abruzzese [7]3 years ago

6 0

Find 10% of it (just move the decimal point one spot to the left) and multiply by 4

jeyben [28]3 years ago

5 0

If your number is x, and you want to take 40% off of x you have to multiply x by .4, then subtract that number from x
So...
x-.4x= 40% off of x

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Step-by-step explanation:

Given expression is,

$\text{cot}A=\frac{1}{2}(\text{cot}\frac{A}{2}-\text{tan}\frac{A}{2})$

To prove this identity we will take the right side of the identity,

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= cot A

Hence right side of the equation is equal to the left side of the equation.

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