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Rus_ich [418]
3 years ago
5

Which is the correct identity for cos(π/2-θ) ? A. cos θ B. sin θ C. sec θ D. csc θ

Mathematics
2 answers:
icang [17]3 years ago
7 0
I believe the answer is D. I’m terribly sorry if I got it wrong
ella [17]3 years ago
6 0

Answer:

B. sin

Step-by-step explanation:

sin A is equivalent to cos(pi/2-a)

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A grocery store had 38 employees, but then they hired 4 more people. What is the percent change in their staff?
gizmo_the_mogwai [7]

The percentage change in the staff strength of the grocery store is 10.53%.

<h3>How to find the percentage change?</h3>

We are given;

Number of employees in store = 38 employees

Number of additional people hired = 4 employees

Thus, percentage change in their staff is;

4/38 * 100% = 10.53%

Thus, the percentage change in the staff strength of the grocery store is 10.53%.

Read more about Percentage change at; brainly.com/question/2085058

#SPJ1

7 0
2 years ago
6. Line a: y - 3x = 4<br> Line b: y = 3x + 5<br> Line c: y - 4x = 3<br><br> Which lines are parallel
kramer

Answer:

Line a and b

Step-by-step explanation:

6 0
2 years ago
Find the equation of the tangent at ( 0 , 2) to the circle with equation
Leto [7]
Https://www.cymath.com/answer?q=(x%20%2B%202)%20%5E%202%20%2B%20(y%20%2B%201)%20%5E%202%20%3D%2013
Just go here
7 0
2 years ago
Working alone, Ryan can dig a 10 ft by 10 ft hole in five hours. Castel can dig the same hole in six hours. How long will it tak
aleksley [76]

.
Rates:
Ryan: 1 hole per 5 hours
Castel: 1 hole per 6 hours
.
Let x = time if working together
then
x(1/5 + 1/6) = 1
x(6 + 5) = 30
11x = 30
x = 30/11
x = 2.7273 hours
or
x = 2 hours and 44 minutes
3 0
3 years ago
Read 2 more answers
Which of the following is the result of expanding 4 £ n=1 (2n-3)
geniusboy [140]

Answer: 8

Step-by-step explanation: the given expression is 2n-3

so when n=1, we will get, 2(1)-3=2-3=-1

when n=2, we will get, 2(2)-3= 4-3=-1

when n=3, we will get 2(3)-3= 6-3=3

when n=4, we will get 2(4)-3 = 8-3=5

so the required result of expansion is -1+1+3+5=8

answer is 8.

hope that helped!

3 0
3 years ago
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