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riadik2000 [5.3K]

3 years ago

8

Where does the Pythagorean Identity sin2 Θ + cos2 Θ = 1 come from? How  does it relate to right triangles?

1 answer:

Llana [10]3 years ago

8 0

I think you meant (sin theta)^2 and (cos theta)^2.

There is an identity stating that (sin theta)^2 + (cos theta)^2 = 1.

Please, don't write "sin2 theta;" it looks too much like sin 2(theta), which is completely different from (sin theta)^2.

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Please help me with this

Lisa [10]

100%-26%
426000*(1-0.26)^t, yearly
(0.74^(1/12))=0.74^0.083 monthly rate of decrease
Equation for calculation population
426000*(0.74^0.083)^12t

I think it should look like this 0.74^0.083 monthly rate of decrease

5 0

4 years ago

Read 2 more answers

Any of these questions please

maw [93]

Answer:

See the explanation below.

Step-by-step explanation:

$f(t)=21020\left(1+0.012\right)^t\\\\f(t)=21020\left(1.012\right)^t\\$

Starting from $t=2002$

By putting $t=2015-2002=13$ we have:

$f(t)=21020\left(1.012\right)^{13}\\\\\approx 24546$

7 0

3 years ago

Triangle angle - sum theorem<br> what is the value of y?

dangina [55]

Answer:

y = 5

Step-by-step explanation:

All angle measures in a triangle add up to 180°.

This means that 63 + 82 + 7y = 180

<u>Solving for Y:</u>

Step 1: Combine like terms.

$(7y) + (63+82)=180$
$7y + 145 = 180$

Step 2: Subtract 145 from both sides.

$7y + 145 - 145 = 180 - 145$
$7y = 35$

Step 3: Divide both sides by 7.

$\frac{7y}{7} = \frac{35}{7}$
$y = 5$

Step 4: Check if solution is correct.

$7(5) + 63 + 82 = 180$
$35 + 63 + 82 = 180$
$98 + 82 = 180$
$180 = 180$

Therefore, y = 5.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

3 0

3 years ago

Write the number in two other forms 15,409

Zepler [3.9K]

15,409/1 or 61636/4 both fractions I can try a expression which is 5(3000+81.8)

8 0

4 years ago

4x-10y=-16 and -7x+20y=23 elimination

mixas84 [53]

(-5/8, 27/20) is the answer.

6 0

4 years ago