Verify the identity.cos 4? = 2 cos2(2?) - 1
What will be an ideal response?
cos 4? = cos[2(2?)] = 2 cos2(2?) - 1
Mathematics
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Find the mode or modes (if any).65, 25, 65, 13, 25, 29, 56, 65
A. 42.5 B. 65 C. 42.9 D. no mode
Mathematics
Solve the equation.d - 5 = -18
A. 13 B. -23 C. -13 D. 23
Mathematics
Solve the problem.Big "D" Sales1989-1990 
MonthWhat was the increase in sales between month 5 and month 6 of 1990?
A. $4000 B. $4 C. $800 D. $8000
Mathematics
Find the direction of the vector  figure 1.png)
What will be an ideal response?
Mathematics