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tekilochka [14]
3 years ago
15

What is 4cos2(165°) – 2 expressed as a single trigonometric function? 4cos(330°) 2cos(330°) 4cos(82.5°) 2cos(82.5°)

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
6 0

Answer:

B) 2cos(330°)

Step-by-step explanation:

vfiekz [6]3 years ago
5 0

Answer:

2cos(330º)

Step-by-step explanation:

both equal to √3

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Maths easy class 8 whoever gets it I will give u brainlist​
asambeis [7]

Answer:

424 cm²

Step-by-step explanation:

The figure is composed of a square and a trapezium on top

A of square = 18² = 324 cm²

A of trapezium = \frac{1}{2} h (b₁ + b₂ )

where h is the perpendicular height and b₁, b₂ the parallel bases

Here h = 8, b₁ = 18 and b₂ = 7 , then

A = 0.5 × 8 × (18 + 7) = 4 × 25 = 100 cm²

Area of hexagonal park = 324 + 100 = 424 cm²

8 0
3 years ago
A rectangle is 36 inches x 48 inches.<br><br> what is the perimeter.?<br><br> what is its area.?
olga nikolaevna [1]
For area, just multiply the length x width
So therefore, multiply 36 inches x 48 inches and there you have it.

Now for the perimeter, it is a little different
You'd have to add the sides up together to get your answer for the perimeter.
So, 36 in + 36 in + 48 in + 48 in = answer
3 0
3 years ago
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The formula below gives T the approximate time in years it takes a population to double if the annual growth rate is r percent
valkas [14]
T=70/r
T=70/4.6
T=15 years

It's b
6 0
3 years ago
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Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.
olga nikolaevna [1]

Answer:

<u><em>16 : 2 + 3 </em></u>  (remember pemdas)

Step-by-step explanation:

Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.

16 : 2 + 3 = 11

8 0
2 years ago
What is two times two
astraxan [27]
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