From the top of a tower 80m high, a student
observe that the angle of depression of the top
of a vertical pole A is 45° and the angle of
depression of point B on the pole is 60°.
if O is the foot of the pole and OB = 20m.
Find the distance between A and B.
leaving your answer in surd form.
I have 2 buckets. Each bucket contains green and blue balls
The first bucket contains 3 green balls and 7 blue balls.
Second bucket contains 7 green balls and 8 blue balls.
I want to take those balls with coin toss.
If head, I will take 1 ball from each bucket.
But if tail, I will take 2 balls from each bucket.
What is the propability if all the balls that have been taken
have the same color?
(sorry for my grammar)
3a = (b + c + d)^(2014)
3b = (a + c + d)^(2014)
3c = (a + b + d)^(2014)
3d = (a + b + c)^(2014)
Find all the solution of (a, b, c, d) if a, b, c, d ∈ R
Let f(x)=x^(2013) +2
(a).Find the remainder when f(x) is divided by x+1.(done)
(b). Show that when 7^(2013) +2 is divided by 8, the remainder
is 1. (please help!)
A polygon has two interior angles of 120° each
and the others are each 150°. calculate
(a) The number of sides of the polygon .
(b) The sum of the interior angles.