Answer:
3 sin(41t) - 3 sin(t)
Step-by-step explanation:
The general formula to convert the product of the form cos(a)sin(b) into sum is:
cos(a) sin(b) = 0.5 [ sin(a+b) - sin (a-b) ]
The given product is:
6 cos(21t) sin(20t) = 6 [ cos(21t) sin(20t) ]
Comparing the given product with general product mentioned above, we get:
a = 21t and b = 20t
Using these values in the formula we get:
6 cos(21t) sin(20t) = 6 x 0.5 [ sin(21t+20t) - sin(21t-20t)]
= 3 [sin(41t) - sin(t)]
= 3 sin(41t) - 3 sin(t)
Therefore, second option gives the correct answer
Answer:
THANKS FOR THE POINTS
Step-by-step explanation:
Answer:
The discriminant is the part under the square root in the quadratic formula, b²-4ac. If it is more than 0, the equation has two real solutions. If it's less than 0, there are no solutions. If it's equal to 0, there is one solution.
Step-by-step explanation:
Answer:
Enter a problem...
Algebra Examples
Popular Problems Algebra Solve for x 2/3x-2=7
2
3
x
−
2
=
7
Combine
2
3
and
x
.
2
x
3
−
2
=
7
Move all terms not containing
x
to the right side of the equation.
Tap for more steps...
2
x
3
=
9
Multiply both sides of the equation by
3
2
.
3
2
⋅
2
x
3
=
3
2
⋅
9
Simplify both sides of the equation.
Tap for more steps...
x
=
27
2
The result can be shown in multiple forms.
Exact Form:
x
=
27
2
Decimal Form:
x
=
13.5
Mixed Number Form:
x
=
13
1
2
Step-by-step explanation:
Thank's………………………………
