LinkBack URL
About LinkBacksOriginally Posted by Casas4
We can get 2 equations out of this:
and
Can you take it from here? You don't need to apply the sum and difference formulas here.
--Chris
Okay so i have two problems that I cant solve completely.
One is a a word problem
1. A sharpshooter intends to hit a target at a distance of 1000 yards with a rifle having a muzzle velocity of vo=1200 feet per second. Neglecting air resistance, determine the gun's minimum angle of elevation x if the range r is given by
r=(1/32)vo^2(sin(2x))
I can solve this problem down to 1/15 = sin(2x) (assuming i did this much right).
My second problem is:
Solve tan(x+pi)+2sin(x+pi)=0 i started to solve this using the sum and difference formulas.
If anyone could help that would be great. Thanks
AC
The next step is, depending on the notation you use,I can solve this problem down to 1/15 = sin(2x) (assuming i did this much right).
or
You then solve for x normally by dividing both sides by 2.
What the notation actually means is inverse sin, so if y = sin(x) then x = arcsin(y).
Often you will be expected to answer in turns of arcsin, but if you have a calculator you can turn it into a decimal approximation. the button on the calculator will probably be labelledor asin.
  |
