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malfutka [58]
3 years ago
8

Verify the identity. Show your work. cos(α - β) - cos(α + β) = 2 sin α sin β

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0
Cos (a-b) = cos(a)cos(b) + sin(a)sin(b)
cos (a+b) = cos(a)cos(b) - sin(a)sin(b)
so, cos(a-b) - cos(a+b) =

=cos(a)cos(b) + sin(a)sin(b) - [cos(a)cos(b) - sin(a)sin(b)]
=2sin(a)sin(b)
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Define a function print_total_inches, with parameters num_feet and num_inches, that prints the total number of inches. note: the
Leona [35]

Answer:

2

I am taking my first programming course, so my apologies if this is a dumb question/possibly classified by the wrong category on this site. One of the exercise problems I am working on is the following:

Define a function print_total_inches, with parameters num_feet and num_inches, that prints the total number of inches. Note: There are 12 inches in a foot. Ex:

print_total_inches(5, 8) prints:

Total inches: 68

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help I know y’all tired of me but I need to pass lol
Naya [18.7K]

I would go with the first one

5 0
3 years ago
If ABC=DEC b=48degree and E=x+4 <br> X=
MrRa [10]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

x + 4 = 48

Subtract sides 4

x +4 - 4 = 48 - 4

x = 44°

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6 0
3 years ago
The length of a rectangular box is 2 units less than its width.
AveGali [126]
15 units = length times length minus 2 Length = 5 Width = 2 Perimeter = 16 15 = y * (y -2) Y = 5 5*2 + 3*2 = 16
5 0
3 years ago
The width of a rectangular garden is 8 feet longer than 4 times its length. If the garden's perimeter is116 feet, what are the d
Travka [436]

SOLUTION:

Step 1:

The length of a rectangular garden is 8 feet longer than its width.

If the garden's perimeter is 184 feet.

What is the area of the garden in square feet?

Step 2:

L = length

W = width

L = W+8

P = perimeter

P = 2(L+W)

P =184 (given)

Substitute L=W+8 in the perimeter equation

2( (W+8) + W ) = 184

(W+8) +W = 92

2W + 8 = 92

2W = 84

W = 42 ft ( Width = 8 feet )

L = W+8

L = 42+8

L = 50 ft ( Length = 50 feet )

Always check your work.

In this case, check the perimeter.

2(L+W) = ?

2(50+42) = 184 feet.

CONCLUSION:

Then, the question says:

It asks for the area in square feet.

A = Area

A = L*W

A = 50 ft * 42 ft

A = 2100 sq ft.

.

6 0
2 years ago
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