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Korolek [52]
3 years ago
15

How do I prove this equation? * this is a grade 11 math problem.​

Mathematics
1 answer:
taurus [48]3 years ago
5 0

Answer:

The answer to your question is below

Step-by-step explanation:

                       

\frac{tan^{2} x}{tan^{2} x + 1} = sin^{2} x

\frac{\frac{sin^{2}x }{cos^{2} x} }{\frac{sin^{2}x }{cos^{2} x} + 1} = sin^{2}x\\                                                                      convert tanx to sinx/cos x

\frac{\frac{sin^{2}x }{cos^{2} x} }{\frac{sin^{2}x + cos^{2} x }{cos^{2}x } } = sin^{2} x                                                         simplify

\frac{sin^{2} x}{sin^{2} x + cos^{2}x } = sin^{2} x

               sin²x + cos²x = 1                                  Use identity of sinx and cosx

                                sin²x = sin²x            

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Debbie has $460 in a savings account that earns 8% annually. If the interest is not compounded, how much interest will she earn
mario62 [17]
She earned $184 in interest.

$644 in all.

Here's why:

The formula is interest = principal x rate x time.

i = 460 x 8% x 5 or i = 460 x 0.08 x 5.

PEMDAS

460(0.08) = 36.8

i = 36.8 x 5

36.8 x 5 = 184

i = $184

To find them in all, add the original amount she deposited with the interest.

460 + 184 = 644

In all: $644
5 0
3 years ago
What is 55/99 rounded to the nearest half
N76 [4]

Answer:1/2

Step-by-step explanation:

4 0
4 years ago
PLEASE HELP WILL GIVE BRAINLIEST TO BEST/CORRECT ANSWER.(P.S I can only give brainliest if 2 people answer.)
Leto [7]
The answer is .277
Why:
Because first of all there are 26 letters in the alphabet then 10 numbers are given. so add those together; 26+10= 36

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then divide
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4 years ago
I Need The Answer Please Help!!
mariarad [96]

Answer:

33°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

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3 years ago
Which inequality is represented by this graph? ​
ValentinkaMS [17]

Answer:

x> 0

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There is an open circle at 0 so this means it is not equal to

The line goes to the right so x is greater than

x> 0

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