Recall that 2sin(x) cos(x) is actually equal to sin(2x).
We can prove this by expanding sin(2x) to sin(x + x).
sin(x + x) = sin(x) cos(x) + cos(x) sin(x) = 2sinxcosx
Thus, 2sin(x/2)cos(x/2) can be rewritten in the form:
sin(2x/2), and this simplifies down to sinx.
7's value is 700 5's value is 50 6's value is 6. Si the value of five is five tenths becauae it is in the tenth spot
Answer:
The smallest is 14.
Step-by-step explanation:
Let the numbers be x, x+2 and x+4, then:
x + x + 2 + x + 4 = 48
3x + 6 = 48
3x = 42
x = 14.
So the 3 numbers are 14, 16 and 18.
This is an arithmetic sequence, where the first term (a) is 15 and the common difference (d) is -2.
The general formula for the nth term of an arithmetic sequence is:

Therefore the required equation is: