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Yanka [14]
3 years ago
6

Sin4u=2sin 2u cos 2u​

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
4 0

Answer:

If you've learnt sin(A+B) = sinAcosB + cosAsinB,

sin(4u)

= sin(2u+2u)

= sin(2u)cos(2u) + cos(2u)sin(2u)

= 2 sin(2u) cos(2u).

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garik1379 [7]
The first sentence starting with, "First of all..." is the topic sentence. The second is not because it is adding detail to the sentence given.

Hope this helps!

8 0
3 years ago
Martha cut a whole piece of rope into 8 equal sections. The piece of rope was 36 feet long before she cut it. Whatis the legth i
gogolik [260]

Answer:

4.5

Step-by-step explanation:

all you really need to do for this question is 36/8 and once you solve it or even look it up then the answer shows you 4.5. 4.5*8 is also 36 if you needed to check you answer on a quiz, test or even homework :)

hope this helps

5 0
3 years ago
I am not able to solve this problem​
Soloha48 [4]

First, 0.0004853 is < 1, so we need to multiply the number by 10 to a negative power if it's greater than 1 (if that makes sense i cant describe it better)

So, b and c is incorrect.

10 to the power of negative 4 = 0.0001, and 4.853 x 0.0001 = 0.0004853 (true), so answer is a

8 0
2 years ago
Read 2 more answers
What the correct answer now fast
Natali5045456 [20]

Answer:

y = 12.9

Step-by-step explanation:

To find the value of the side y, simply apply the law of cosines.

y^2 = (14)^2 + (9)^2 - 2(14)(9)cos(64)

y^2 = 196 + 81 - 110.47

y^2 = 166.53

y = 12.9

Therefore, your solution should be y = 12.9

Cheers.

7 0
3 years ago
What is the sum of -2.2 and 0.44?
jarptica [38.1K]
The sum of the two is -1.76
-2.2 + 0.44
=-1.76
4 0
3 years ago
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