The time taken for radio signal to the earth's surface we shall proceed as follows;
time=(distance)/(speed)
Distance=7.5×10^6 meters
speed=3×10^8 meters/second
therefore:
Time=(7.5×10^6)/(3×10^8)=0.025 seconds
We conclude that it will take the signal 0.025 seconds to reach the surface of the earth.
Answer:
No
Step-by-step explanation:
y=0.375x is a proportional or linear relationship because y is a consant multiplied by the variable x. In other words, x increases with y at a linear rate, therefore being proportional.
1/sin^2 -1 = csc^2 -1 = cot^2
derive formula from formula
sin^2 + cos^2 = 1
divide both sides by sin^2
we got 1 + cot^2 = csc^2
or. csc^2 - 1 = cot^2 ... we use this
