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3 years ago

Which equation can be used to prove 1 + tan2(x) = sec2(x)?

Mathematics

1 answer:

notsponge [240]3 years ago

6 0

Answer:

fourth option

Step-by-step explanation:

Using the trigonometric identity

cos²x + sin²x = 1

Divide all terms by cos²x

$\frac{cos^2x}{cos^2x}$ + $\frac{sin^2x}{cos^2x}$ = $\frac{1}{cos^2x}$ which gives

1 + tan²x = sec²x

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Divide (-3x^2 - 9x) ÷ (x + 3) please explain/show work! <33

Stolb23 [73]

Step-by-step explanation:

 $( - 3 {x}^{2} - 9x) \div (x + 3)$ 

This is the original equation so you will open the brackets.

 $- 3 {x}^{2} - 9x \div x + 3$ 

The x will cross the division sign making it times x.

 $3 {x}^{2} - 9x \times x = 3$ 

So you will proceed to multiply the 9x by x making it;

 $3 {x}^{2} - 9 {x}^{2} = 3$ 

So you will subtract 9x² from 3x² which won't be possible so it will be negative.

 $- 6 {x}^{2} = 3$ 

Then you will square root both sides making it;

 $- \sqrt{6 {x}^{2} } = \sqrt{3}$ 

So the ² will cancel the √ leaving 

-6x=√3

-6x=1.73(Divide both sides by -6)

x=0.288

That's the final answer.

8 0

3 years ago

Modern parents are not trying in parenting please help debate que dont steal my points

lutik1710 [3]

Answer:

Parents are too busy with their careers which leads children to seek attention by being aggressive

Parents Who Abuse Their Children Set an Example of Violence

Authoritative Parenting is Better Than Coddling to Prevent Violent Children

What About Outside Sources?

Parents Can Prevent Violence by Spending Time With Their Kids

Step-by-step explanation:

Hope this helped!

3 0

3 years ago

Solve the system of equations for X. X+ 2y= 24 2x+y= 9

Phantasy [73]

Answer:

c) because i did it on usa tp -13 and listen to ariana grande position great for school thinking

Step-by-step explanation:

if you do 2x11+-13=9 11+2x-13=24

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The label on Emily’s protein shake said that one serving provided 15 grams of fat, which is 20% of the recommended daily amount.

galben [10]

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Step-by-step explanation:

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3 years ago