what does sinh do? how do I get inverse sin? i.e. how do I push buttons to get an angle in degrees from the ratio of triangle side lengths? same question for cos and tan buttons
+33661 If you have a right-angled triangle and the opposite side length (= b, say) and the length of the hypotenuse (= h, say)
then the angle ( = B) is given by 2nd asin (b/h) enter
If you have the adjacent side length (= a, say) and the hypotenuse
then B is given by 2nd acos (a/h) enter
If you have the opposite and adjacent side lengths
then B is given by 2nd atan (b/a) enter
"sinh" is what is known as a hyperbolic function. It is defined as follows:
sinh(x) = (ex - e-x)/2
We also have cosh(x) = (ex + e-x)/2
and tanh(x) = sinh(x)/cosh(x)
..
