What is 9 copies of 3.65

Mathematics

2 answers:

AysviL [449]3 years ago

7 0

32.85 is the answer you just multiply

iragen [17]3 years ago

5 0

Answer: 32.85 is 9 copies of 3.65

Explanation:

According to question we are asked to determine the value of 9 copies of 3.65 which means we have add 3.65 nine times:

3.65 + 3.65 + 3.65 + 3.65 +3.65 + 3.65 +3.65 3.65 + 3.65 = 3.65(1+1+1+1+1+1+1+1+1)= $3.65\times (9)=32.85$

So,the nine copies of 3.65 is 32.85.

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I need help proving this ASAP

Ket [755]

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See explanation

Step-by-step explanation:

We want to show that:

$\tan(x + \frac{3\pi}{2} ) = - \cot \: x$

One way is to use the basic double angle formula:

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$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ \sin(x) ( 0) + \cos(x) ( - 1) }{\cos(x) (0) - \sin(x) ( - 1) }$

We simplify further to get:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ 0 - \cos(x) }{0 + \sin(x) }$

We simplify again to get;

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{- \cos(x) }{ \sin(x) }$

This finally gives:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = - \cot(x)$

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