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umka2103 [35]
3 years ago
5

Prove that (Cosx-Cos³x)/Sinx=SinxCosx​

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

(Cosx-Cos³x)/Sinx=SinxCosx

Step-by-step explanation:

sin3x−cos3x

=sinxsin2x−cosxcos2x

=sinx(1−cos2x)−cosx(1−sin2x)

=sinx−sinxcos2x−cosx+cosxsin2x

=sinx−cosx+(sinx−cosx)sinxcosx  

=(sinx−cosx)(1+sinxcosx

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IVedle Question Help Miranda's financial aid stipulates that her tuition not exceed $1500. If her college charges a $45 registra
forsale [732]

Answer:

Therefore, Miranda can register for at most 3 courses.

Explanation:

If x is the number of courses in which Miranda register, the total cost for her tuition will be:

45 + 450x

Because there is a fixed cost of $45 and a cost per course of $450.

Then, this cost should be less than or equal to $1500, so we can write the following inequality:

45 + 450x ≤ 1500

Now, we can solve the inequality for x. Subtract 45 from both sides:

45 + 450x - 45 ≤ 1500 - 45

450x ≤ 1455

Divide both sides by 450:

450x/450 ≤ 1455/450

x ≤ 3.23

Therefore, Miranda can register for at most 3 courses.

7 0
1 year ago
You’re making to recipes one recipe calls for 2 1/3 cups of flour the other recipe calls for 1 1/4 cups of flour how much flour
Rudiy27
The answer to your question is 5 1/12
6 0
3 years ago
Complete two ratios to describe the model. 4 dark blue triangles and 12 light blue triangles. The ratio of light blue triangles
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Answer:

1:3

Step-by-step explanation:

4:12 simplified is 1:3. for every 1 dark blue there are 3 light blues.

5 0
3 years ago
Read 2 more answers
14. A company rents bicycles for a fee of $10 plus
Rashid [163]

Answer:

10+4h

Step-by-step explanation:

variation

the constant $10+the variable( 4×hpw many hours used).will give me that answer.

8 0
4 years ago
The length of the side of square a is twice the length of the side of square b. What is the ratio of the area of square a to the
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<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ As you can tell, the ratio of the lengths is 2 : 1 (the length of a is twice the length of b)

The ratio for area would be the squared version of the length ratio

2^2 = 4

1^1 = 1

The ratio for area is 4 : 1

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➶ Hope This Helps You!

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7 0
3 years ago
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