Question

From a boat on the lake, the angle of elevation to the top of a cliff is 26°1'. If the base of the cliff is 205 feet from the boat, how high is the cliff (to the nearest foot)?

A.113 ft

B.110 ft

C.103 ft

D.100 ft

Answer 1

so id be 100? D

Answer 2

Yeah

Answer 3

http://www.bbc.co.uk/schools/gcsebitesize/maths/geometry/furthertrigonometryhirev2.shtml

Check this out for Cosine Law

Answer 4

oh ahh thankyou..do you think you could help me with this problem as well if your not busy..

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed the angle of depression to the boat is 16°18'. When the boat stops, the angle of depression is 48°51'. The lighthouse is 200 feet tall. How far did the boat travel from when it was first noticed until it stopped? Round your answer to the hundredths place.

Answer 5

is that 16.18°

Answer 6

16°18', -- 16 degree 18'

Answer 7

Well i sent you the link using that you can learn the rule and try this.

Answer 8

ok