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
geniusboy [140]
3 years ago
14

Verify the identity. sin (x+pi/2)=cos x

Mathematics
1 answer:
hram777 [196]3 years ago
4 0
Given data 
<span>sin (x+pi/2)=cos x
</span>now using sin law
sin(a+b)=sin(a)cos(b)+cos(a)sin(b)
now using above values
sin(pi/2+x)=sin(pi/2)cos(x)+cos(pi/2)sin(x)
as we know that
sin(pi/2)=1
cos(pi/2)=0
now putting these values
sin(pi/2+x)=1*cosx+0*1
sin(pi/2+x)=cosx
hence proved that

<span>sin (x+pi/2)=cos x</span>
You might be interested in
PLZ HELP, BEST ANSWER WILL BE CHOSEN FOR BRAINLIEST!!!!!
boyakko [2]

Answer:

A square root of 80 m

Step-by-step explanation:

5 0
2 years ago
Twice the difference of a number c and forty.​
dybincka [34]

Answer:

Equation ---->    2(c - 40)

c = -40

Step-by-step explanation:

2(c - 40)

= (2c) - (80)

= 2c - 80

= \frac{2c}{2} + (\frac{-80}{2})

c = -40

4 0
3 years ago
Read 2 more answers
Can someone tell me answer plz
Vinil7 [7]

The answer would be A

6 0
3 years ago
Read 2 more answers
I need help on this please
Andrew [12]

Answer:

15.01

Step-by-step explanation:

From the diagram above, the following were obtained:

Adj = 7

0 = 65°

Opp =?

Tan0 = Opp /Adj

Tan65° = Opp/ 7

Cross multiply

Opp =7 x Tan65°

Opp = 15.01

7 0
3 years ago
Read 2 more answers
(7/8 - 5/2) + 10/2 x 1/4
Allisa [31]

Answer:

-3/8

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Through what angle does the bowling ball turn as it travels the length of the lane
    7·1 answer
  • Please help me with problem 1.
    13·1 answer
  • How do you calculate percentage
    15·2 answers
  • What is the height of this relation: <br> h= -0.3d² + 1.2d + 1.5
    11·1 answer
  • 4 1/2 times 6 1/2 times 18
    9·1 answer
  • Are my answers correct
    8·2 answers
  • The _____ of y=-5sin2x is 5<br><br> A. Amplitude <br> B. Period <br> C. Frequency
    10·1 answer
  • 2 2/3 yards = how many feet
    7·2 answers
  • Find the inverse of g(n) = - 3 - 1
    9·1 answer
  • I need help asap plz
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!