arcsin(3/4) basically means sin^-1(3/4) right? in my book the answer is .84806... and on my calculator it's 48.5904? what am i doing wrong? (im using a TI-89 btw)
2007-10-14 18:59:58 · 3 answers · asked by WOOOT 2 in Science & Mathematics ➔ Mathematics
the book is stating it in radians.
you are both right.
you are doing nothing wrong :-).
48.5deg in radians is 48.5*pi()/180 = 0.85
2007-10-14 19:06:05 · answer #1 · answered by kiwi25 3 · 0⤊ 0⤋
Read as angle whose sin is 3/4
θ = sin^(-1) (3/4)
θ = 48.6 ° , 131.4 ° (1st and 2nd quadrants)
I have an old calculator.
Obtained answer by 3 ÷ 4 = INV sin buttons.
2007-10-14 23:07:16 · answer #2 · answered by Como 7 · 0⤊ 0⤋
your in degrees...need to change calculator to radians
or divide by 180 and multiply by pi
2007-10-14 19:05:20 · answer #3 · answered by Very confused 4 · 1⤊ 0⤋