From a boat on the lake, the angle of elevation to the top of a cliff is 18°41'. if the base of the cliff is 991 feet from the boat, how high is the cliff (to the nearest foot)?

Notice the picture below, and recall your SOH CAH TOA



which identity has only
adjacent
opposite
and angle only ?

well   

also notice, the angles in are degrees and minutes, so, I think many or most calculators have degrees and minutes and seconds to enter the value

otherwise you can just covert the 41' to degrees by 41/60, since there are 60 minutes in 1 degree, so in degrees will be 18 + 41/60

and make sure your calculator is in Degree mode as well

Tan(18+41/60)=h/991

h=991tan(18+41/60)

h=335 ft

Where is your question?

It’s 5 points actually