Ship B is 100m east of Ship A, and the bearing of Ship B from Ship A is 30°. How far due North is the ship?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Find the multiplicative inverse of 8-12i

Write the equation in logarithmic form 8^x=64