A^2 + b^2 = c^2....a and b are the legs and c is the hypotenuse
14^2 + b^2 = 50^2
b^2 = 50^2 - 14^2
b^2 = 2500 - 196
b^2 = 2304.....take sqrt of both sides, eliminating the ^2
b = sqrt 2304
b = 48 ft <=== the other leg
Answer:
C. 4(cos(300°) +i·sin(300°))
Step-by-step explanation:
The magnitude will be ...
magnitude = √(2^2 +(-2√3)^2) = √(4+12) = 4
The negative imaginary part puts the angle in the 4th quadrant. The answer choice with a magnitude of 4 and a 4th-quadrant angle is ...
4(cos(300°) +i·sin(300°))
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If you want to figure the angle, it will be ...
angle = arctan(Im()/Re()) = arctan(-2√3/2) = arctan(-√3) = -60°
The corresponding 4th-quadrant angle is 300°.
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<em>Comment on answer choices</em>
Answer choice A is <em>another representation of the same number</em>. Typically, we want the magnitude to be positive in polar form, so that answer can be avoided on those grounds.
Answer:
Step-by-step explanation:
hello :
circunferencia P=π×d d: el diámetro
d= P/π
d=28.26/3.14 = 9 U