Thursday

December 25, 2014

December 25, 2014

Posted by **Kate** on Tuesday, July 20, 2010 at 9:01pm.

arcsin(4/5)

note that I am not looking for about 53 degrees

I believe I'm suppose to solve euler's formula for x

i.e.

sin (x) = (e^(ix) - e^(-ix))/(2i)

where x is in radians

hence I would do something like this

sin (x) = (e^(ix) - e^(-ix))/(2i) = 4/5

(e^(ix) - e^(-ix))/(2i) = 4/5

solve the equation above for x

this is were I need help if somebody could just show me quickly how to do this that would be great!!!

If I remeber correctly I need to use cis(x) or something right?

- Calc -
**Kate**, Tuesday, July 20, 2010 at 9:47pmok this is now an algebra question...

- Calc -
**drwls**, Wednesday, July 21, 2010 at 12:11amx = 0.92730.. radians

I don't see any way to do this algebraically.

**Answer this Question**

**Related Questions**

math - Eliminate the parameter (What does that mean?) and write a rectangular ...

math - Can anyone help w/ these. 1) Solve the equation in the internal [0deg, ...

Trigonometry - I need help with I just can't seem to get anywhere. this is as ...

Math Please Assist - Solve exactly for x: sin^3 x + sin x cos^2 x = cos x If 0 ...

Calc - Solve the equation for x. arcsin(sq. rt.(2x)) = arccos(sq. rt(x))

pre calc - Use the sum-to-product formula to simplify the expression: If sin 52...

Calc. - Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x ln...

trig - please help me with some questions I skipped on a review for our test ...

trig - solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x...

algebra - how would i work out the following problems solve each formula in ...