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madam [21]
3 years ago
6

Provethat:cos^3A Cos3A + sin^3A.sin 3A=cos^3 2A​

Mathematics
1 answer:
aalyn [17]3 years ago
3 0

Answer:

<h3>Hope it will help you..!! </h3>

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If numerator is 2 less than the denominator of a rational number and when 1 is subtracted from numerator and denominator both, t
LUCKY_DIMON [66]

Answer:

3/5

Step-by-step explanation:

1/2=2/4

2+1=3

1+4=5

3/5

6 0
2 years ago
Plz answer!! only if you are correct. don’t answer just for points :)
Ann [662]

Answer

Step-by-step explanation:

Both 1 and 2 equel up to 90 degrees

so to find x for 1 and 2 you would simplify the equations

90 = 6x - 3

and

90= 3x - 6

simplify them and you wil get the answers you want

another way to do it is combining the two and solve.

90 = 9x - 9  

Just simplify :)

8 0
3 years ago
Don’t answer if you don’t know, plz. Thanks.
horrorfan [7]
B. I did this test too.
7 0
3 years ago
Please help me quickly.<br> Thank you
Ludmilka [50]
3/4(x+21) = 10.5
0.75x+15.75 = 10.5
0.75x = -5.25
x = -7

Hope it helps : )
3 0
2 years ago
Read 2 more answers
Mario deposits $300 in a savings account over the course of a year. He deposits money into the account throughout t next year un
Rainbow [258]

 The answer is an=2⋅ 300^n−1.

7 0
3 years ago
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