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2 years ago

If sina-Cosa= o find coseca.

Mathematics

1 answer:

oee [108]2 years ago

6 0

Answer:

cscα=√2

Step-by-step explanation:

Problem: If sinα-cosα=θ find cscα

Solution:

sinα-cosα=θ

sinα=cosα

sinα=sin(90-α)

If α<90, then:

α=90-α

2α=90

α=45°

sin(45°)

1/sin(45°)

csc(45°)

√2

Therefore, cscα=√2 if sinα-cosα=θ

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2. The ratio of

denpristay [2]

Answer:

Step-by-step explanation:

Given the ratio of the profit, cost of materials and labour in the production of

an article to be 5:7:13 respectively, total ratio = 5+7+13 = 25

If the cost of labour is x, the cost of material will be 840+x (since the cost of materials is Le 840 more than that of labour) .

Let the total cost of producing the article be y.

Cost of labour = 13/25 * y = x

Cost of labour = 13y/25 = x.................... 1

Cost of material = 7/25*y = 840+x

Cost of material = 7y/25 = 840+x ..................... 2

From 1, 13y = 25x

x = 13y/25 ................... 3

Substituting equation 3 into 2:

7y/25 = 840+x

7y/25 = 840+13y/25

collect the like terms:

7y/25 - 13y/25 = 840

-6y/25 = 840

-6y = 25*840

y = 25*840/6

y = 3,500

Hence the total cost of producing the article is 3500

4 0

3 years ago

Convert from feet to yards. 6,249 feet = ___ yards

Mashcka [7]

Answer:

2083

Step-by-step explanation:

Every yard is 3 feet so divide 6243 ft by 3 to get your answer

$\frac{6249}{3} = 2083$

Hope I helped! :)

3 0

1 year ago

Read 2 more answers

What’s the answer to (-2)(-3)

PIT_PIT [208]

Answer:

+ 6

Step-by-step explanation:

(-2)·(-3) = + 6

(-)·(-) = +

4 0

3 years ago

Read 2 more answers

How do I do this problem with solution by elimination? 2x+y=3 -2x+5y=-9

ddd [48]

Answer:

(2, -1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

2x + y = 3

-2x + 5y = -9

Step 2: Solve for y

Elimination

Combine equations: 6y = -6
Divide 6 on both sides: y = -1

Step 3: Solve for x

Define equation: 2x + y = 3
Substitute in y: 2x - 1 = 3
Isolate y term: 2x = 4
Isolate y: x = 2

7 0

3 years ago

Which is equivalent to V4500° after it has been simplified completely?

Rufina [12.5K]

Answer:

Step-by-step explanation:

5 0

3 years ago

If sina-Cosa= o find coseca.​

If sina-Cosa= o find coseca.