Hello
cos ( x + pi/2) =cos(x)cos(pi/2)-sin(x) sin(pi/2)
= cos(x)×0-sin(x) ×1
cos ( x + pi/2) = - sin(x)
Answer:
A the table display qualitative data, C two teachers do not wear glasses, E a total of 6 teachers were polled
Answer:
Sorry, I can't type well.
3 squares = 4 circles, so (number of squares)/(number of circles) = 3/4.
3/4 = 12/16
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4 squares = 2 circles, so (number of squares)/(number of circles) = 4/2.
4/2 = 2/1
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2 squares = 5 circles, so (number of squares)/(number of circles) = 2/5.
2/5 = 4/10
Net yardage=3-6-4+5=-2
So the team lost 2 yards in four plays...
