Use the unit circle. Of the choices given, only cos 45 and sin 45 are equal to positive sqrt2/2.
The firefighters would not be able to reach the cat because the ladder is only 35 cm tall and the cat is 39m up (I HOPE THIS ACTUALLY HELP IF IT DOES NOT I HOPE SOMEONE CAN HELP YOU)
this formula, doesn't rely on a product, relies on a "sum", or is namely an arithmetic sequence, aₙ₋₁ -3 is another way of saying, the value of the previous term minus 3, so it relies on the ordinal value of a term, so is an recursive formula, well, let's get it when n = 4.

The table isn’t shown so I cant tell
The answer is -271/4x + 681/2