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jeka94
2 years ago
12

Choose a justification for each step in the derivation of the sine difference identity.

Mathematics
2 answers:
Natali [406]2 years ago
8 0

Answer:

Step 1:  

✔ Cofunction identity

Step 5:  

✔ Sine difference identity

Step 6:  

✔ Cofunction Identity

Step 7:  

✔ Cosine function is even, sine function is odd.

Step-by-step explanation:

Aleks04 [339]2 years ago
8 0

Answer:

Step 1: Cofunction identity

Step 5: Cosine difference identity

Step 6: Cofunction identity

Step 7: Cosine function is even, sine function is odd

Step-by-step explanation:

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Answer:

I want to show you how to do this as well, the formula you are working with is a^2+b^2=c^2

Step-by-step explanation:

1.) 8^2+b^2=12^2

64+b^2=144

subtract 64 from both sides

b^2=80

take the square root of 80 and you get

b= 8.9

if you need more help on this let me know, I am going to list the other answers now because to do it all and show work on here is a lot of typing, all of which I will do if you do not understand the first example. Also the c value can ONLY BE THE HYPOTENUSE VALUE. The hypotenuse is the longest side of the triangle. For example, 12 would be the C value on number one and in number two it would be 15.

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3 years ago
0.8y+0.25= -0.4<br><br> Solve for y
disa [49]

Answer:

y = -13/16

Step-by-step explanation:

<u>Given:</u>

0.8y+0.25= -0.4

<u>To Find:</u>

Solve for y

<u>Solution:</u>

Multiply both sides by 100

0.8y\cdot \:100+0.25\cdot \:100=-0.4\cdot \:100

Simplify

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Subtract 25 from both sides

80y+25-25=-40-25

Simplify

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Simplify

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<u><em>~Lenvy~</em></u>

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Step-by-step explanation:

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C.L.T

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2 years ago
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Answer:

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Step-by-step explanation:

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