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MrRa [10]
3 years ago
6

Find the value of x.

Mathematics
1 answer:
mixas84 [53]3 years ago
8 0

Answer:

x=3

Step-by-step explanation:

BRAINLIEST plzzzzzzzzzzzzzzzzzz

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Solve this query plzzz​
Olin [163]

Step-by-step explanation:

\frac{\sin \:4A}{\cos \:2A}  \times \frac{1 - \cos \:2A}{1 - \cos\:4A}   = \tan \:A \\  \\ LHS =  \frac{\sin \:4A}{\cos \:2A}  \times \frac{1 - \cos \:2A}{1 - \cos\:4A}   \\  \\  =  \frac{2\sin \:2A.\cos \:2A}{\cos \:2A}   \times  \frac{1 - (2 { \cos}^{2}A - 1) }{1 - (2 { \cos}^{2}2A - 1) } \\  \\  = 2\sin \:2A   \times  \frac{1 - 2 { \cos}^{2}A  +  1}{1 - 2 { \cos}^{2}2A  + 1 } \\  \\  = 2\sin \:2A   \times  \frac{2- 2 { \cos}^{2}A  }{2 - 2 { \cos}^{2}2A   } \\  \\   = 2\sin \:2A   \times  \frac{2(1 - { \cos}^{2}A)  }{2 (1-  { \cos}^{2}2A)   } \\  \\   = 2\sin \:2A   \times  \frac{1 - { \cos}^{2}A}{1-  { \cos}^{2}2A   } \\  \\     = 2\sin \:2A   \times  \frac{ { \sin}^{2}A}{{ \sin}^{2}2A   } \\  \\    = 2  \times  \frac{ { \sin}^{2}A}{{ \sin}2A   } \\  \\   = 2  \times  \frac{ { \sin}^{2}A}{{ 2\sin}A. \cos \:   A } \\  \\   = \frac{ { \sin}A}{ \cos \:   A }  \\  \\  = tan \: A \\  \\  = RHS \\

7 0
3 years ago
1.) what is five forths of a right angle, 2.) what is three forths of a right angle?
klasskru [66]

Answer:

1.) 112.5 degrees

2.) 67.5 degrees

3.) 150 degrees

4.) 240 degrees

5.) 540 degrees

( don't hate me if any is wrong don't think they are but just trying to help) let me know if any of them are wrong and if it helped!

3 0
3 years ago
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Which of the following demonstrates using the
shusha [124]
I think the answer might be A and D
5 0
3 years ago
In a pet store the number of fish is 120 more than three times the number of reptiles. If the pet store has 210 fish, how many r
polet [3.4K]
Let r represent reptiles
210=3r-120
330=3r
110=r

110 reptiles
4 0
3 years ago
2•(3 (5+2) - 1) Geometry Math.​
bagirrra123 [75]

Answer:

40

Step-by-step explanation:

2 • (3(5 + 2) - 1) =

Start with the innermost parentheses.

= 2 • (3(7) - 1)

Now do the multiplication inside the parentheses.

= 2 • (21 - 1)

Do the subtraction inside the parentheses.

= 2 • 20

= 40

3 0
3 years ago
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