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3 years ago

Divide the following:

Mathematics

1 answer:

Ray Of Light [21]3 years ago

6 0

Answer:

Here. Solved. Check the answer.

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Use a graph in a (-2π, 2π, π/2) by (-3, 3, 1) viewing rectangle to complete the identity.

yaroslaw [1]

First, notice that:

$2\tan (\frac{x}{2})=2\cdot(\pm\sqrt[]{\frac{1-cosx}{1+\cos x})}$

And in the denominator we have:

$1+\tan ^2(\frac{x}{2})=1+\frac{1-\cos x}{1+\cos x}=\frac{1+cosx+1-\cos x}{1+cosx}=\frac{2}{1+\cos x}$

then, we have on the original expression:

$\begin{gathered} \frac{2\tan(\frac{x}{2})}{1+\tan^2(\frac{x}{2})}=\frac{2\cdot\pm\sqrt[]{\frac{1-\cos x}{1+cosx}}}{\frac{2}{1+\cos x}}=\frac{2\cdot(\pm\sqrt[]{1-cosx})\cdot(1+\cos x)}{2\cdot(\sqrt[]{1+cosx})} \\ =(\sqrt[]{1-\cos x})\cdot(\sqrt[]{1+\cos x})=\sqrt[]{(1-\cos x)(1+\cos x)} \\ =\sqrt[]{1-\cos^2x}=\sqrt[]{\sin^2x}=\sin x \end{gathered}$

therefore, the identity equals to sinx

8 0

1 year ago

HELP PLEASE I WILL MARK YOU AS A BRAINLIEST!!

Naddika [18.5K]

Answer:

Step-by-step explanation:

4x-8

Hope I helped. Please mark brainliest. Have a good day!

5 0

3 years ago

Kurt has $20. He spends $8. What percent of his money did Kurt spend?

wlad13 [49]

Answer:

40% Hope I helped

7 0

3 years ago

Read 2 more answers

PLEASE HELP MEEEEEEEEEE

Alona [7]

Answer:

Step-by-step explanation:

here's your solution

=> Both the traingle are similar hence ,

=> it's corresponding sides are in equal ratio

=> so,8/20 = 6/y

=> 8y = 20*6

=> y= 20*6/8

=> y = 15

 hope it helps

4 0

3 years ago

Help, please I can't answer it

Ivan

Answer:

A and c i think it will help you

5 0

3 years ago

Divide the following:​

Divide the following: