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torisob [31]
3 years ago
9

Explain which trig functions and identities produce circles, ellipses and hyperbolas.

Mathematics
1 answer:
Lemur [1.5K]3 years ago
7 0
Note that we can also write equations for circles<span>, </span>ellipses, and hyperbolas<span> in terms of cos and sin, and other </span>trigonometric functions<span>; there are examples of these ...</span>
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Evaluate (a + b)3 – 12 when a = 2 and b = 1.
dimulka [17.4K]

Answer:

the answer is -3

Step-by-step explanation:

(2+1)*3-12 is -3

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2 years ago
How many yards are in 150 feet?
aliya0001 [1]
Each yard is 3 feet, so 150 / 3(a yard) = 50 (yards)
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3 years ago
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A student stands 20 m away from the foot
Ostrovityanka [42]

Answer:

Height of tree is \approx <em>15 m.</em>

<em></em>

Step-by-step explanation:

Given that student is 20 m away from the foot of tree.

and table is 1.5 m above the ground.

The angle of elevation is: 34°28'

Please refer to the attached image. The given situation can be mapped to a right angled triangle as shown in the image.

AB = CP = 20 m

CA = PB = 1.5 m

\angle C = 34°28' = 34.46°

To find TB = ?

we can use trigonometric function tangent to find TP in right angled \triangle TPC

tan \theta = \dfrac{Perpendicular}{Base}\\tan C= \dfrac{PT}{PC}\\\Rightarrow tan 34.46^\circ = \dfrac{PT}{20}\\\Rightarrow PT = 20 \times 0.686 \\\Rightarrow PT = 13.72\ m

Now, adding PB to TP will give us the height of tree, TB

Now, height of tree TB = TP + PB

TB = 13.72 + 1.5 = 15.22 \approx <em>15 m</em>

7 0
3 years ago
Kiyo bought a pizza for 12.75 and four medium drinks at Paulis pizza. Define a variable and write an expression to represent the
Elina [12.6K]
A = cost of 1 drink $12.75 + 4a $12.75 + $12.00 = $24.75

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The pier is 200 meters long. each board is 80 centimeters wide. how many boards are in the pier?
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100 cm = 1 meter
80 cm = 0.8 meter
200 meters/.8 meters = number of boards
250
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