4 years ago

Are non-empty sets and A × B = B × A then ……

Mathematics

1 answer:

alex41 [277]4 years ago

4 0

Answer:

Step-by-step explanation:

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3 years ago

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3 years ago

Twenty more than half a number of 70.what is the number

Dima020 [189]

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4 years ago

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HELP! Evaluate tan 45ddegrees /sin 30 degrees. In your final answer include all calculations

nadezda [96]

<h2>Hello!</h2>

The answer is: 2

Before solving the problem, we must remember the following:

$tan(\alpha)=\frac{sin(\alpha)}{cos(\alpha)}$

So, for tan(45°) we have:

$tan(45)=\frac{sin(45)}{cos(45)}\\ \\\frac{sin(45)}{cos(45)}=\frac{\frac{\sqrt{2} }{2} }{\frac{\sqrt{2} }{2} }=1$

Also, for sin(30°), we have:

$sin(30)=\frac{1}{2}$

Then, substituting and dividing, we have:

$\frac{tan(45)}{sin(30)}=\frac{1}{\frac{1}{2}}\\\\\frac{1}{\frac{1}{2}}=1*\frac{2}{1}=2$

So, the answer is 2.

Have a nice day!

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4 years ago