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Arada [10]
2 years ago
10

PLZ HELP ILL MARK BRAINLEST

Mathematics
1 answer:
Ne4ueva [31]2 years ago
4 0

NOTES: The general equation of a circle is (x – h)2 + (y – k)2 = r2, where (h, k) represents the location of the circle's center, and r represents the length of its radius.

THE ANSWER IS A

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Verify the following identity and show steps<br><br> (Cos2 θ)/(1+sin2 θ)= (cot θ-1)/(cot θ+1)
Paul [167]

Answer:

Verified below

Step-by-step explanation:

We want to show that (Cos2θ)/(1 + sin2θ) = (cot θ - 1)/(cot θ + 1)

In trigonometric identities;

Cot θ = cos θ/sin θ

Thus;

(cot θ - 1)/(cot θ + 1) gives;

((cos θ/sin θ) - 1)/((cos θ/sin θ) + 1)

Simplifying numerator and denominator gives;

((cos θ - sin θ)/sin θ)/((cos θ + sin θ)/sin θ)

This reduces to;

>> (cos θ - sin θ)/(cos θ + sin θ)

Multiply top and bottom by ((cos θ + sin θ) to get;

>> (cos² θ - sin²θ)/(cos²θ + sin²θ + 2sinθcosθ)

In trigonometric identities, we know that;

cos 2θ = (cos² θ - sin²θ)

cos²θ + sin²θ = 1

sin 2θ = 2sinθcosθ

Thus;

(cos² θ - sin²θ)/(cos²θ + sin²θ + 2sinθcosθ) gives us:

>> cos 2θ/(1 + sin 2θ)

This is equal to the left hand side.

Thus, it is verified.

5 0
2 years ago
Sandy has box of chocolates. Box cost $2.00. In box has 8 chocolates. How much does each chocolate cost.
Lorico [155]
So you must find individual prices.


Start by doing the price($2.00)divided by the amount in box(8) 


you should get 0.25 or 25 cents per chocolate
5 0
3 years ago
Read 2 more answers
True or False? An equiangular triangle can never be scalene. A. True B. False
slavikrds [6]
Its true because scalene doesn't have equal sides 
8 0
3 years ago
Read 2 more answers
Help?
vodomira [7]
M = ounces of M&M
r = ounces of raisins

calories = 139m + 85r

calories < 600

139m+85r<600


3 0
3 years ago
If their food and beverages cost $25.30 and there is an 8% meals tax, how much is the bill? Enter your answer in the box.
emmasim [6.3K]
25.30×.08=20.24
The answer is $20.24.
7 0
3 years ago
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