1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kruka [31]
3 years ago
6

sin%28%20%5Calpha%20%29%20" id="TexFormula1" title=" \cos( \alpha + \frac{\pi}{2} ) = - \sin( \alpha ) " alt=" \cos( \alpha + \frac{\pi}{2} ) = - \sin( \alpha ) " align="absmiddle" class="latex-formula">
why is it equal​
Mathematics
1 answer:
alexandr1967 [171]3 years ago
5 0

\cos (\alpha +\frac{\pi}{2})= \cos(\frac{\pi}{2})\cos (\alpha)- \sin(\frac{\pi}{2})\sin(\alpha)\\=0-\sin(\alpha)\\=-\sin (\alpha)

You might be interested in
A coffee shop sells their coffee beans by the pound. the table below shows the cost in dollars for a pound of two different type
Pepsi [2]

Answer: 23.6

Step-by-step explanation:

9.25+8.42 = 17.7

1 1/3 x 17.7 = 23.6

5 0
3 years ago
Can an answer to an equation be a decimal?
sesenic [268]

Answer:

Yes

Step-by-step explanation:

An answer to an equation can be a decimal!

-Please mark as brainliest!-

-Hope this helps!-

-Good luck!-

6 0
4 years ago
Read 2 more answers
Andres works at a job that pays him 12.50 an hour.Andres works 30 hours a week.How much does he make each month after 30% of cal
BlackZzzverrR [31]

Answer:

he makes $112.50

Step-by-step explanation:

first you have to find out how much he makes before tax is taken out. all you do is multiply 12.50 by 30, which gives you $375.00. then, you can either put in the calculator 30%375 or 0.3×375(both are the same thing) and you should get $112.50

8 0
3 years ago
The function g(x) = 3x2 − 12x + 7 written in vertex form is g(x) = 3(x − 2)2 − 5. What is the vertex of g(x)?
faltersainse [42]

Answer:  The correct option is (C). (2, -5).

Step-by-step explanation:  The given function is

g(x)=3x^2-12x+7.

The vertex form of the function g(x) is g(x)=3(x-2)^2-5~~~~~~~~~~~~~~~~~~~~~~(i)

We know that if the vertex form of a function f(x) is written as

f(x)=a(x-h)^2+k,

then its vertex is (h, k).

So, from equation (i), we can say that the vertex of function g(x) is

(2, -5).

Thus, (C) is the correct option.

5 0
3 years ago
Read 2 more answers
X+8 > 18 how do you solve it
mixer [17]

Answer:

move eight to the other side of the sign by subtracting it from both sides x>10

8 0
3 years ago
Other questions:
  • You are paid $119 $119 for 8 1 2 812 hours of work. what is your rate of pay?
    10·1 answer
  • Pls help +show work! Thx
    11·1 answer
  • Shark can swim 36 feet in 1 second. at this speed, how far would it swim in 3 seconds?
    13·1 answer
  • At time t equals​0, a particle is located at the point ​(2​,1​,6​). It travels in a straight line to the point ​(9​,8​,5​), has
    13·1 answer
  • Need help pls hurry. multiply​
    5·2 answers
  • Marcus hiked 4 3/2 miles. John hiked 3 1/3 miles. How much further did Marcus hike?
    5·1 answer
  • Solve the system of equations by using substitution.
    15·1 answer
  • The picture above^ Is this situation linear or exponential?
    11·1 answer
  • Please help me please help​
    10·1 answer
  • The function ()=2f(x)=x2is transformed to
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!