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LekaFEV [45]
3 years ago
15

Find the exact value of each trigonometric function for the given angle θ.

Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

[rad] 2.41

Step-by-step explanation:

Since it gave you the point and the angle to find, you simply just have to solve for the inverse of cot. Remember cot is the opposite of tan, so cot is cos/sin. In that case, we plug into the calc (in radians):

cot^-1(-√5/2)

And we should get 2.41 as our answer!

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5. Let f(x) = x - 2 and g(x) = x^2. Find the value of (g of)(4).<br> A.14<br> B.4<br> C. 62<br> D.32
Ber [7]

Answer:

B. 4

Step-by-step explanation:

(g o f)(x) means that we put the expression for f(x) in for x in g(x):

(g o f)(x) = g(f(x)) = (x - 2)²

We want to find (g o f)(4), so plug 4 in for x:

(g o f)(x) = (4 - 2)² = 2² = 4

The answer is thus B.

<em>~ an aesthetics lover</em>

3 0
4 years ago
PLEASE ANSWER FOR ME I REALLY NEED HELP. CORRECT ANSWERS ONLY
larisa [96]

Answer:

D, B, F

Step-by-step explanation:

$2 each pound

x= pounds

y= total cost

1 pound= $2

the $2 : constant  

the number of pounds: variable

the equation is y=2x

1 pound: $2

2 pounds: $4

4 pounds: $8

5 pounds: $10

these also could be written as coordinates

the coordinates are  (1,2),(2,4),(4,8),(5,10)

6 0
3 years ago
Read 2 more answers
If z = (5 + 12i) ÷ (3 + 4i), then |z| = _____.<br><br> 5/13<br> 1(2/3)<br> 2(3/5)<br> 3
Marta_Voda [28]
\dfrac{5+12i}{3+4i}=\dfrac{5+12i}{3+4i}\cdot\dfrac{3-4i}{3-4i}=\dfrac{15-20i+36i-49i^2}{3^2-(4i)^2}\\\\=\dfrac{15+16i+49}{9-16i^2}=\dfrac{64+16i}{9+16}=\dfrac{64+16i}{25}=2.56+0.64i


z=a+bi\\\\|z|=\sqrt{a^2+b^2}\\\\z=2.56+0.64i\to a=2.56;\ b=0.64\\\\|z|=\sqrt{2.56^2+0.64^2}=\sqrt{6.9632}=\sqrt{\dfrac{69632}{10000}}=\sqrt{\dfrac{4096\cdot17}{100}}\\\\=\dfrac{64\sqrt{17}}{100}=0.64\sqrt{17}\approx2.6=2\dfrac{3}{5}
3 0
3 years ago
Read 2 more answers
if the density is 2300kg per m3 and the mass of 1 metre medal if 5kg what would the total mass of the concrete and the strips be
Lady_Fox [76]

Answer: 5000

Step-by-step explanation:

Sorry need the points :b

8 0
3 years ago
In the straightaways, each lane is a rectangle. What is the area and perimeter of each
Greeley [361]

The area of the lane is 50 in² and its perimeter is 30 in.

<h3>What is an area</h3>

Area is the amount of space occupied by a two dimensional object or figure. For a rectangle:

Area = length * width

Let the length of the lane be 10 in and the width be 5 in, hence:

Area = 10 * 5 = 50 in²

Perimeter = 2(length + width) = 2(10 + 5) = 30 in

The area of the lane is 50 in² and its perimeter is 30 in.

Find out more on area at: brainly.com/question/19819849

7 0
3 years ago
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