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Margaret [11]
3 years ago
14

Find the exact value of the expression cos10°cos20°-sin10°sin20° Please Help

Mathematics
1 answer:
Svet_ta [14]3 years ago
5 0
Cos10 cos20 -sin10 sin20 = cos(10+20) = cos30 = √3/2
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Solve for m<1 and m<2.
stira [4]

Answer:

M<2 =61* M< = 61

Step-by-step explanation:

You know angle 4 is 119* and the straight line is 180* so if u do 180 - 119 it is 61 , therefore 1 ,2,and 3 are 61*

8 0
2 years ago
C = z-q/a for ‎z‎<br> (Integrated Math 8)
Trava [24]

Answer:z=c+q/a

Step-by-step explanation:

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2 years ago
Which set of ordered pairs has point symmetry with respect to the origin (0, 0)?
Leya [2.2K]

Answer:

(-8, 3), (8, -3)

Step-by-step explanation:

Point symmetry about origin means reflection of the given point about the origin.

The reflection of a point about the origin will cause the 'x' and 'y' value of the point to change its sign.

Therefore, the coordinate rule for point symmetry about the origin is given as:

(x,y)\to (-x,-y)

Now, let us check each of the given options.

Option 1:

(-8, 3), (8, -3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3)

So, option 1  is correct.

Option 2:

(-8, 3), (-3, 8)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (-3, 8)

So, option 2 is not correct.

Option 3:

(-8, 3), (-8, -3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (-8, -3)

So, option 3 is not correct.

Option 4:

(-8, 3), (8, 3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (8, 3)

So, option 4 is not correct.

Hence, only option 1 is correct.

5 0
3 years ago
What has the same value as 3/4
ch4aika [34]
The decimal form, which is equivalent to 3/4, is .75

Other fraction forms of 3/4, would be also 6/8, 9/12, 12/16, 15/20, 18/24, 21/28
8 0
3 years ago
Read 2 more answers
Which of the following represents the number of units between -5 and -2 on the number line?
LenKa [72]

Answer:

d) |-5 - (-2)|

..........................

7 0
2 years ago
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