Please do this problem without trigonometry table, calculator, computer, etc! {SIN (20)} * {SIN (40)} * {SIN (60)} * {SIN (80)} I can't do this problem. Can...
I forgot but as far as my knowledge goes it can be done in this way : Sin 20 = Sin (180 - 60) Sin 40 = Sin( 60 - 20) Sin 60 = Sin 80 = Sin (60+20) We have...
In a message dated 2004-02-03 9:07:33 AM Eastern Standard Time, ... how can sin(20) = sin(180-60), when 180-60 = 120, not 20? stevo [Non-text portions of this...
... I know little about the details of this subject, so what I write could be inaccurate or even wholly wrong. But I do have a general idea of this, so I will...
1. h= -5t² + 100t. This means that after 0 seconds, the flare has a height of 0, after 1 second it has a height of -5(1)² + 100 = 95, etc. Now imagine a...
... wrote:> ... THanks! Exactly the same as the last one. Again, the graph of the function rises, peaks, and then nosedives. h is the flare's height in...
... This one involves a bit of the old calculus. I'd advise you to read about the basics of it elsewhere; it will explain what I'm about to do. The value A...
... 90msquare? a) We use exactly the same procedure as before. We wish to maximise the value of A, so we differentiate it with respect to x to find dA/dx,...
clooneman, your reasoning is sound (but i haven't checked the arithmetic); however, some numerical approximations for the times at 80m would have been really ...
A triangle has sides 10, 17, and 21. A square is inscribed in the triangle. One side of the square lies on the longest side of the triangle. The other two...
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Suppose you have a triangle ABC and you want to geometricly inscribe the largest possible equilateral triangle so that each vertice of the Eq. tringle lies on...
Is there a "nice", logical way of deducing the answer to this problem? ... positive whole number of points was awarded for 1st, 2nd and 3rd places. The number...
Sum of points = 20 + 10 + 9 = 39 = 3 * 13 So either 3 races were held, or 13. If no. of races is 13, 1st can't get more points than 2nd and 2nd than 3rd. So...
A total of 39 points were awarded to the boys. This must be a multiple of the number of points awarded per race. So either 13 points were awarded for each...
sqrt of a negative number ... In the field of reals, we are working in the complex field here, so yes it can. Can you give me the value of sqrt(-1) in terms...
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Seen on another forum, I couldnt solve this problem: Show that: (n+1)*x+...+(n+k)*x^k+...+2n*x^(2n) has at least two complex roots say z1 and z2 such that:...
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