Answer:
In the explanation
Step-by-step explanation:
Going to start with the sum identities
sin(x+y)=sin(x)cos(y)+sin(y)cos(x)
cos(x+y)=cos(x)cos(y)-sin(x)sin(y)
sin(x)cos(x+y)=sin(x)cos(x)cos(y)-sin(x)sin(x)sin(y)
cos(x)sin(x+y)=cos(x)sin(x)cos(y)+cos(x)sin(y)cos(x)
Now we are going to take the line there and subtract the line before it from it.
I do also notice that column 1 have cos(y)cos(x)sin(x) in common while column 2 has sin(y) in common.
cos(x)sin(x+y)-sin(x)cos(x+y)
=0+sin(y)[cos^2(x)+sin^2(x)]
=sin(y)(1)
=sin(y)
Answer:
28
Step-by-step explanation:
4x7=28
14x2=28
Answer:
D
Step-by-step explanation:
0.000009 = 9×10^-6
0.00000003 = 3×10^-8
9×10^-6 / 3×10^-8 =
9/3 × 10^(-6+8) = 3 × 10^2
Answer:
-32 actually
Step-by-step explanation:
-2 x -2 x -2 x -2 x -2
= 4 x 4 x -2
= 16 x -2
= -32
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