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S_A_V [24]
2 years ago
12

Prove sin^2 theta-sin^2 theta is sin tetha sin 3 thetahow to prove..pls help!! thanksss

Mathematics
1 answer:
Artemon [7]2 years ago
3 0
Simply you can substitute theta=45 degrees (or any angle,not zero) in left hand side and right hand side.

or 

using a^2 - b^2 =(a+b)(a-b)

= sin(2x+x)sin(2x-x)
= sin 3x sin x
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The perimeter of a rectangle is 56 inches. The length is 4 more than twice the width. Write and solve a system to determine the
Marianna [84]
Width: x
length: x + 4
Equation: 2(x + x + 4) = 56
2(2x + 4) = 56
4x + 8 = 56
4x = 48, x = 12
Width = 12, 12 + 4 = length
Solution: the length is 16 inch
5 0
2 years ago
Read 2 more answers
The help is needed for these times
rosijanka [135]

Answer:

This be soooo hard ;w;

Step-by-step explanation:

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3 0
3 years ago
An apartment building produces $4,000 per quarter in gross rents. The maintenance expenses run $350 per month. Property taxes ar
erica [24]

Answer:

0.16%

Step-by-step explanation:

Cost of rent per quarter = $4000

Cost of rent per year = 4×$4000

= $16,000

This means that the apartment building produces $12,000 per year in gross rents.

Yearly Expenses are as follows;

Maintenance expenses per year = 12×$350 = $4200

Property taxes per year = $1,750

Mortgage payment per year = 12×$650 = $7800

Total expenses per year = sum of all the yearly expenses

= $4200+$1,750+$7800

= $13750

Yearly revenue generated = Cost of rent per year - total yearly expenses

= $16,000-$13750

= $2250 (net operating income)

Capitalization rate is given as the ratio of the net operating income to the market value of the building.

Capitalization rate = net operating income/market value of building

Since the building with $83750, that will be its market value

Cap rate = $13750/$83750

Cap rate = 0.16%

6 0
3 years ago
last week, ezra's sold 1/3 of tangerines and Anthony sold 3/4 of tangerines as ezra's did. how many boxes of tangerines did Anth
Bond [772]

Answer:

¼ box

Step-by-step explanation:

Ezra sold ⅓ box of tangerines.

Anthony sold ¾ as many as Ezra               = ¾ × ⅓ box

Cancel the 3s                                               = ¼ × ¹/₁ box

Multiply numerators and denominators     = ¼ box

Anthony sold ¼ box of tangerines.

6 0
2 years ago
What is the probability of flipping a coin twice and landing on heads both times?
valkas [14]

Answer:

I think it would be B.

Step-by-step explanation:

Since you aready have a 50% chance of landing on both heads or tails once. To land it on heads twice you would have a twenty five percent chance if you look at logic.  in which my dad would often say. <u>Please mark the brainliest</u>

4 0
3 years ago
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