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dimulka [17.4K]
4 years ago
6

Find the exact value of sin(11pi/12)cos(pi/6)-cos(11pi/12)sin(pi/6)

Mathematics
1 answer:
krek1111 [17]4 years ago
6 0
We use the identity  sin (A - B) = sin A cos B - cos B sin A

so the above  = sin (11pi/12 -  pi/6) = sin 3pi/4 =  1 / sqrt2 answer
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Quadrilateral ABCD is a parallelogram A(-3,-2) B(-1,2) C(1,1) D(-1,-3)
taurus [48]

Okay

Step-by-step explanation:

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3 years ago
Suppose that the new england colonials baseball team is equally likely to win a game as not to win it. if 4 colonials games are
seraphim [82]
1. Consider the tree diagram in the picture attached.

2 Each of the games picked can be a W (win) or a L (lose), the chances are equal

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7 0
3 years ago
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Masja [62]
The answer has to be 2 I think
7 0
3 years ago
How do you find the unknown?
Anettt [7]
Measure the angle with a protractor
5 0
4 years ago
Please help 20 point and brainliest
7nadin3 [17]
X=-2 and y=3.

The first step we take is to substitute the value for y from the second equation into the first equation:
4x+5(3x+9)=7

This is justified by substitution.  The next step is:
4x+5*3x+5*9=7
4x+15x+45=7

This is justified by the distributive property.  The next step is:
19x+45=7

This is justified by addition of like terms.  The next step is:
19x+45-45=7-45
19x=-38

This is justified by the subtraction property of equality.  The next step is:
19x/19 = -38/19
x=-2

This is justified by the division property of equality.  The next step is:
y=3(-2)+9
y=-6+9
y=3

This is justified by substitution, multiplication and addition, in that order.
8 0
3 years ago
Read 2 more answers
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