3 years ago

1. What is an equivalent expression for

Mathematics

1 answer:

ipn [44]3 years ago

5 0

Answer:

i am so confused right now :)::):::)::):))

Step-by-step explanation:

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The 9 ounce toothpaste is a better deal.
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3 years ago

Multiply ( × - 2 ) ( 3× + 4) using distribution method

posledela

Answer:

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Step-by-step explanation:

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steps are shown below

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4 years ago

Use the net to find the lateral area of the prism.<br> 15 m<br> 3m 6m 3m 6m

azamat

Answer:

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3 years ago

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Step-by-step explanation:

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3 years ago

I need help from uh all..

DanielleElmas [232]

Answer:

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,

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

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

$=\frac{1}{2}[\frac{2(1-\text{tan}^2\frac{A}{2})}{2tan\frac{A}{2}}]$

$=\frac{1}{2}(\frac{2}{\text{tan}A} )$ [Since $\text{tan}A=\frac{2\text{tan}\frac{A}{2}}{1-\text{tan}^2\frac{A}{2}}$ ]

= cot A

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

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3 years ago