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lukranit [14]
3 years ago
15

15. Simplify sin(90° - O) cos 0 - sin(180° +0) sin e.​

Mathematics
1 answer:
dalvyx [7]3 years ago
4 0

Answer:  cos²(θ) + sin(θ)sin(e)

<u>Step-by-step explanation:</u>

sin (90° - θ)cos(Ф) - sin(180° + θ) sin(e)

Note the following identities:

sin (90° - θ) = cos(x)

sin (180° + θ) = -sin(x)

Substitute those identities into the expression:

   cos(x)cos(x)  -  -sin(x)sin(e)

=  cos²(x) + sin(x)sin(e)

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The measures of the angle of a triangle are shown on the figure below. Solve for X.
Y_Kistochka [10]

Internal angles sum: 180(sides-2) = 180

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proof:

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What is reciprocal of the fraction in the equation 3/5(2x+8)=18?
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Answer:

  5/3

Step-by-step explanation:

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3 years ago
BRAINLIEST + POINTS! Please explain
ivolga24 [154]

Answer:

Option D. \$83.75  

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we know that    

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A=P(1+\frac{r}{n})^{nt}  

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4 years ago
1.
Viktor [21]

Answer:

g(x) = (x - 4)^2 - 5, and the vertex is (4, -5)

Step-by-step explanation:

Please, use " ^ " to indicate exponentiation:  g(x) = (x - 4)^2 – 5.  Comparing this to y = a(x - h)^2 + k, we see that h must be 4 and k must be -5.  Thus, the vertex is (4, -5).

Make a table showing several x-values and the corresponding y-values:

x       g(x) = (x - 4)^2 - 5                     (x, y)

0                    (-4)^2 - 5 = 11               (0, 11)

4                (4 - 4)^2 - 5 = -5               (4, -5)

8 0
3 years ago
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