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How do you Evaluate 5sec90 2cos270-7tan360 cos60sin30-cos45 sin45?
Wiki User
∙ 15y ago
Ich mochte berechnen rechtwinkelig dereieck y=90 a=5 b=4 c=? ß=?
Wiki User
∙ 15y ago
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Convert the following complex number into its polar representation: 2 + 2i?
2sqrt2(cos45 + i * sin45)
Are The sine and cosine of acute angles equal?
The sine and cosine of acute angles are equal only for 45° sin45° = cos 45° = 1/sqrt(2) = 0.7071
How do you find the area of a square in a circle?
2 x radius squared assuming the corners of the square intersect the circle. the length of the sides of the square = (2r)sin45 so the area of the square = ((2r)sin45)e2 sin45 =~.707 (1/2 sq.rt. of 2), squared =0.5 so the equation becomes (2r)e2 x 0.5 or 4 x (r)e2 x 0.5 so 2 x radius squared = area of a square bound by a circle example: circle 3 inches radius bounds a square what is the area of the square 2 x 3 x 3 = 18 square inches length of the chords marking the sides of the square is ~4.2426 inches
Explain how you could use an isosceles right triangle to determine the exact value of cos45 sin45 and tan45?
Two equal sides contain 90 angles . third side will treated as hypotenuse.
When are y equals sin x and y equals cos x equal?
y=sinx y=cosxsinx=cosx=>sinx/cosx=1=>tanx=1=>x=45oie.. y=sin45=cos45y=1/(square root of 2)
If sin b equals to x over y where b is acute find cos b in terms of x?
sin45=1/root 21/root 2 = x/ycos45= 1/root 2x/y= 1/root 2x=y/root 2
What is crosswind direction?
A crosswind is any wind that is not in the same direction as travel. The crosswind component is perpendicular to the direction of travel ( 90 degrees). Mathematically, the crosswind component is the speed times the sine of the angle relative to the direction of travel. For example if a plane travels NORTH and there is a crosswind from the EAST ( 90 degrees) at 20 mph the crosswind component is 20 mph ( 20 sin90 = 20) For another example if a plane travels NORTH and there is a crosswind from the NORTHEAST ( 45 degrees) at 20 mph the crosswind component is 14.1mph ( 20 sin45 = 14.1)
