2009-10-20, 08:51 PM
I can't post in the Math Help thread, or it'll be considered necroing. Darn.
Anyways, I can't figure out this trig problem.
Evaluate the following in radians. No calculators may be used.
sin (2Arcsin 12/13)
Notice the capital A in Arcsin. A lowercased arcsin is the name as Sin^-1.
The answer is either 120/109 or 120/104 (I can't read my own handwriting, goddangit). However, I would like to know how you would do this.
Thanks.
Anyways, I can't figure out this trig problem.
Evaluate the following in radians. No calculators may be used.
sin (2Arcsin 12/13)
Notice the capital A in Arcsin. A lowercased arcsin is the name as Sin^-1.
The answer is either 120/109 or 120/104 (I can't read my own handwriting, goddangit). However, I would like to know how you would do this.
Thanks.