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Arisa [49]
3 years ago
14

Verify the identity. sin(3pi - x) = sinx

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

we use the angle- sum and difference trigonometric identity to simplify the expression sin(3pi - x). This is equal to sin 3 pi cos x - cos 3 pi sin x. In this case, sin 3 pi  is equal to zero while cos 3 pi is equal to -1. Hence the answer simplified is equal to sin x .
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7x-7+35-34p+(45x-2p)+6^4
ss7ja [257]

Answer:

=−36p+52x+1324

Step-by-step explanation:

7x−7+35−34p+45x−2p+64

=7x+−7+35+−34p+45x+−2p+1296

Combine Like Terms:

=7x+−7+35+−34p+45x+−2p+1296

=(−34p+−2p)+(7x+45x)+(−7+35+1296)

=−36p+52x+1324

6 0
3 years ago
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Given f(x)= 2x^3+kx-1, and x+1 is a factor of f(x), then what is the value of k?
VMariaS [17]

Answer:

put x=-1, and the rest will be easy

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2 years ago
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finlep [7]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Solve the following systems algebraically<br> a. x+2y=17 <br> x-y=2
motikmotik
There are 3 methods to solve this. elimination substitution and graphing but i am going to use the elimination method.
  x+2y=17
 <u> x-y   =2
</u> 0+3y  =15   ( subtracted down to eliminate the x)( x-x=0, 2y-(-y)=3y, and 17-2=15)
     3y=15    (divide both sides by 3 to solve for y)
      y=5
<u>substitute the y=5 in any of the above equations and solve for x
ie... ( </u>meaning where you find y in the equation, u replace it with a 5)

it will be easier to solve for x in (x-y=2) so i will use that one.
x-(5)=2  ( add 5 on both sides to solve for x)
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5 0
3 years ago
Using the side lengths of △PQR and △STU, which angle has a sine ratio of 4/5?
marishachu [46]

Given the two triangles, and the sine ratio formula is equal to:

Sin(x) = O/H

Where x is one angle of the triangle

O is the opposite side of the angle x

H is the hypotenuse of the triangle

 

To solve this we have to fine O/H = 4/5

So the answer is

Sin (P) = 16/20 = 4/5

<span>So angle P has the sine ratio of 4/5</span>

8 0
3 years ago
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