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Ymorist [56]
3 years ago
14

We can use identities to help us solve trigonometric equations. Using a Pythagorean identity we see that the equation sin(x) + s

in2(x) + cos2(x) = 1 is equivalent to the basic equation Incorrect: Your answer is incorrect. whose solutions are x = Incorrect: Your answer is incorrect. for any integer k.
Mathematics
1 answer:
Dima020 [189]3 years ago
5 0

Answer:

\sin x = 0, x = \pm \pi\cdot i, \forall i \in \mathbb{N}_{O}

Step-by-step explanation:

The following trigonometric equation is simplified by using identities:

\sin x + \sin^{2}x + \cos^{2}x = 1

\sin x + 1 = 1

\sin x = 0

Whose solutions are:

x = \pm \pi\cdot i, \forall i \in \mathbb{N}_{O}

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Am I right?? <br> * Show examples &amp; details if I am wrong!! *
baherus [9]

Yes, you are correct.

From the image, we can see 3 triangles, the large triangle and the two triangles that make the larger triangle.

All 3 of these triangles are similar since they're angle measurements are the same (can be proven by geometry).

We can gather the following information from the given information.

  • The largest triangle (the one made up of two triangles) has a hypotenuse of 3+9=12, and a leg length of x. The hypotenuse to leg ratio is 12/x
  • The second largest triangle has a hypotenuse length x and leg length 9. The hypotenuse to leg ratio is x/9

We know the hypotenuse to corresponding leg ratio must be equal since these two triangles are similar. Thus, we have the equation:

12/x = x/9

Using the cross product property gives us:

x² = 9 × 12

x² = 108

Taking the square root of both sides gives us:

x = √108

= 6 √3

Thus, your answer is correct. Great job!

Let me know if you need any clarifications, thanks!

8 0
4 years ago
A jacket that is regularly sold for $49.95 is on sale for 25% off. What is the sale price of the jacket?
Gnoma [55]

First, find 25% of 49.95. Turn 25% into a decimal by dividing by 100.

25% ⇒ 0.25

Now, multiply 0.25 by 49.95.

0.25 × 49.95 = 12.46

25% of 49.95 is 12.46, so subtract 12.46 from 49.95.

49.95 - 12.46 = 37.49

<h2>Answer:</h2>

<u>The discounted price of the jacket is </u><u>$37.49</u><u>.</u>

Now find 8% of 37.49.

8% ⇒ 0.08

Multiply 0.08 by 37.49.

0.08 × 37.49 = 2.99

<h2>Answer:</h2>

<u>The tax is </u><u>$2.99</u><u>.</u>

To find the full price, add 37.49 and 2.99 together.

37.49 + 2.99 = 40.48

<h2>Answer:</h2>

<u>The final cost is </u><u>$40.48</u><u>.</u>

4 0
4 years ago
How many gallons of pure water should be added to 10 gallons of a solution containing 15% juice so that the remaining solution c
Vinvika [58]
1.5 gallons of juice
a. 10 gallons
b. none
c. 10 gallons (all water)

hope its right!!! good luck

4 0
3 years ago
Read 2 more answers
Plz help what is 5(4• 2/7)
postnew [5]
4*2/7=8/7 and 8/7*5=40/7 so correct answer is 40/7
5 0
3 years ago
Find: ∠a ∠b ∠c Plaese help
Amiraneli [1.4K]

Answer:

i believe a=105, b=29, and c=45

4 0
4 years ago
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