Recent content by Sadriam

Thank you for clarifying (:

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 ?

Would my next step be this: sin (2 arcsin (4/5)) = cos (arcsin (4/5)) 2 sin (arcsin (4/5)) 1 = cos (arcsin (4/5)) ?

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...