Need precal help!!!!!!!!!!!!!!1?

Question

Some examples are
csc^-1(14/4) Just not sure how to figure these out?

sec^-1(3.5) to 2 decimal places

cot ^-1 to 2 decimal places.

Answer 1

csc^-1(14/4) = arccsc (7/2)
Draw a right triangle with hypotenuse = 7 and short leg = 2.
Then long leg = sqrt(7^2-2^2) = sqrt(45) = 3sqrt(5).
Let x be the angle between the hypotenuse and the long side
Then sin x = 2/7, cos x = 3Sqrt(5)/7, csc x = 7/2,
tan x = 2/3sqrt(5) , etc. In all cases x = 16.60 degrees

You can do the rest . Please note the 3rd problem is incomplete.

Answer 2

use a calculator....