Answer:
when n=0, x=18°
when n=1, x= 90°
when n=2 x=18+72*2=162°
when n=3, x=18+72*3=234°
when n=4, x=18+72*4=306°
or
x= 18 + 72n, when n={0,1,2,3,4}
Step-by-step explanation:
4sin(5x) =4
sin(5x) = 1
sin(α) = 1, when α=90° + 360n
5x = 90° +360n
x= 18 + 72n
when n=0, x=18°
when n=1, x= 90°
when n=2 x=18+72*2=162°
when n=3, x=18+72*3=234°
when n=4, x=18+72*4=306°
when n=5, x°=18+72*5 = 378°
General answer : x= 18 + 72n, when n={0,1,2,3,4}
Answer:
87.5
Step-by-step explanation:
By completing the square,
y
=-14x^2+70x
=-14(x^2-5x)
=-14(x-5/2)^2+175/2
the max. height=175/2
i.e. 87.5
Xy = 216
x = 216/y
2x + 2y = 60
2(216/y) + 2y = 60
432 + 2y^2 = 60y
2y^2 - 60y + 432 = 0
y = 18 , y = 12
if y = 12
x = 216/12
x = 18
length = 18
width = 12
Answer:
3/5
Step-by-step explanation:
Cos C = adjacent/hypotenuse
or, Cos C = 21/35 = 3/4
Answered by GAUTHMATH
