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
saul85 [17]
4 years ago
11

Verify the identity cos quantity x plus pi divided by two = -sin x

Mathematics
1 answer:
In-s [12.5K]4 years ago
6 0

Answer:

Identity is verified.

Step-by-step explanation:

We have to verify the identity cos(x+\frac{\pi }{2}) = (- sinx)

To prove any identity we always prove one side(either left hand side or right hand side) of the equation equal to the other side.

In this identity we take the left hand side first

cos(x+\frac{\pi}{2})

=cosx\times cos(\pi/2)-sinx\times sin(\pi/2))  (as we know cos(a+b) = cosa×cosb-sina×sinb)

= cosx\times0-sinx\times1

= 0-sinx

= - sinx ( Right hand side)

Hence identity is proved.

You might be interested in
Help:
dalvyx [7]

Answer:

Step-by-step explanation:

a. (11x) + (22x)= 33x

b. (-6x) - (-6x) = 0

c. (-13) + (14x) - (+13t) = -13t + 14x - 13

d. (-4t) + (+4t) - (-6t) = 6t

4 0
3 years ago
Read 2 more answers
Help please!!!! thank you in advance. asap too​
qaws [65]
You can check the following
C=4
C=5
C=11
4 0
2 years ago
Lisa's test grades are 79, 89 and 90
Vaselesa [24]

Answer:

<u>94</u>

Step-by-step explanation:

Equating the mean to the scores :

  • 88 = 79 + 89 + 90 + x / 4
  • 352 = 258 + x
  • x = <u>94</u>
6 0
2 years ago
Read 2 more answers
Least to greatest for 4.375×10 , 1.5 inches, 1 7/8 inches,0.25 inches, 1.428×10 inches
Andre45 [30]
<span>4.375×10 = 43.75
</span><span>1 7/8 = 15/8 = 1.875
</span>1.428×10 = 14.28

so order from <span>Least to greatest:
</span>0.25 inches, 1.5 inches, 1 7/8 inches, 1.428×10 inches and <span>4.375×10 inches</span>
7 0
3 years ago
What 4 factors were used to create this Product game board 9,15,18,21,30,35,36,42,49
slava [35]
Check : brainly.com/question/5023362 



To see what are the factors use, we write each of the numbers, as product of prime factors, as shown in the picture



As we can see, the 4 factors used to produce the numbers in the list are {2, 3, 5, 7}


Answer:  {2, 3, 5, 7}

6 0
3 years ago
Read 2 more answers
Other questions:
  • Julien interviewed his classmates on which course they prefer and which animal they prefer. What percentage of cat lovers also p
    11·2 answers
  • What is the length of the diagonal AC in the rectangle below?
    10·2 answers
  • Find the measure of each angle indicated.<br> 940<br> 94<br> 58<br> 77<br> 127
    6·1 answer
  • If the number of people is greater than the number of segments, each person will get less than one segment, true or false?
    8·1 answer
  • 70 POINTS!!! read instruction below
    5·1 answer
  • A college has a total of 107 teachers 23 more female teachers than male teachers
    5·1 answer
  • John plays basketball at the local gym. The gym charges a monthly membership fee of $15.00, plus each player pays $2.50 per game
    10·2 answers
  • Soleil and Malvin each work a job. Soleil starts with $700 and makes $100 per day. Malvin starts out with $200 and makes $120 pe
    7·1 answer
  • Complete the sentences.
    14·1 answer
  • If m = 2, find the value of m+3.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!