Some Mathematics help I could use. Working shown please.?

[Akaria]

1. Mars is 2.3*10^8km from the sun, the speed of light is 3.0*105km/s. How long does it take light from the Sun to reach Mars? Give answer to nearest minute.

2. Solve algebraically the trigonometric equations;
5sinx° + 3 = 2sinx° + 5 , 0 <= x <= 360

Thank you very muchly.

[cidyah]

1) divide 2.3*10^8 by 3.0*105
2) 3 sin(x) =2
sin(x)= 2/3
x= 41.80519041043038 degrees

[joel7681]

Go with Cidyah

[The Link]

1=567 days.
2=hg<kio9).87678<5>9i04

I think.

[David F]

first of all the speed of light isn't 3.0*105km/s, it's 3.0*10^5km/s so we'll use this value.

time taken = distance/speed so....

t = 2.3*10^8 / 3.0*10^6 seconds
t = 0.7666*10^3
t = 766.6 seconds
minutes = seconds/60 so
t=766.6/60 = 12.77minutes


sorry about your second question, i was never any good at algebra