Question

in the AP physics textbook it says that
if 0 denotes the angle that the vector a=3i+4j makes with the +x axis, then tan 0 =4/3, so 0 =tan^-1(4/3) =53.1 degrees

I don’t understand how did they use (4/3) to get the result 53.1 degrees ?

4/3 = 1.3333 is not 53.1

and even if i multiplied it with the angle i don’t get 53.1

4/3 *45=59.9985

if I use tan in the calculator I get 0.0232

so how did they get 53.1 ?

Answer 1

i get it now , I just had to use another calculator :)