3 years ago

Review the proof of the identity cos(π − A) = −cosA.

Mathematics

2 answers:

Annette [7]3 years ago

6 0

Answer:

error in step 1

Step-by-step explanation:

well where is does the step not make sense?

remember cos(pi) = -1 and sin(pi)=0

that means step 1 is strange... it didn't distribute properly

it should have been:

cos(pi) - cos(A)

hope that helps! ^-^

Anestetic [448]3 years ago

5 0

Answer: Step 1 on EDGE2020

You might be interested in

Is 15b+4=25.6 equivalent to 0.6+15b+4=25.6

pychu [463]

No because
15b + 4 = 25.6
15b = 21.6
b = 1.44

0.6+15b+4 = 25.6
4.6 + 15b = 25.6
15b = 21
b = 1.4

The answers are not the same therefore they are not equivalent.

3 0

3 years ago

What is a constant rate of change

Dmitry_Shevchenko [17]

Answer:

A constant rate of change- means that something changes by the same amount during equal intervals.

Step-by-step explanation:

5 0

3 years ago

What would be the first step you would take in simplifying 6 - 3+ 5 x 2 ?

Darya [45]

The first step you would take would be multiplying 5x2

4 0

3 years ago

Read 2 more answers

What is the factor of x²-4x+24

DochEvi [55]

Answer:

Their are no possible factors for this expression.

Step-by-step explanation:

3 0

3 years ago

3x-4y=16 and 5x+2y=44 using elimination strategy and comparing strategy

chubhunter [2.5K]

$3x-4y=16 \\5x+2y=44 \\ \\3x-4y=16 \\10x+4y=88 \\ \\13x=104 \\x=\boxed{104\div13=8}\\ \\3\times8-4y=16 \\24-4y=16 \\-4y=-8 \\y=\boxed{2}$

5 0

3 years ago