Homework Statement
Solve each equation for solutions on the interval 0 ≤ x ≤ 2∏.
2 sin x = √3
The Attempt at a Solution
Okay so I was able to solve this one:
2 sin x = √3
sin x = (√3) / 2
So i got x = ∏/3 ; 2∏/3 ; 4∏/3 ; 5∏/3
I substituted the x's into the original...
Could the way i did be used? If so, would it become:
1 = cos (arcsin (4/5))
And I'm a little confused about arcsin. Does arcsin mean "some side" over "some side" just like cos means adj / hyp ?
Okay thank you. Yes i am familiar with sin 2x = 2 sin(x)cos(x). So would this be correct:
sin (2 arcsin (4/5)) = 2 sin (arcsin (4/5)) * cos (arcsin (4/5))
Homework Statement
Find the exact value of the given expressions.
sin (2 sin-1 (4/5))
or
sin (2 arcsin (4/5))
Just two different ways of writing it
Homework Equations
maybe
The Attempt at a Solution
I've only gotten this far:
sin (2 arcsin (4/5)) = 2 sin (arcsin (4/5))...
OK sorry about the wait. Actually this is a train on a roller coaster. When i say i have speed/velocity, i do not have the direction so technically i don't have the velocity, but i don't think this would matter much. I can get the initial and final speed from one point to another.
The forces...
Im trying to find the mass of an object. It is not a problem, but i would like to find it so that i could use the mass for other calculations. I have the object's:
speed / velocity from one point to another.
The initial and final height of the object.
The vertical and horizontal forces...