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March 5, 2015

March 5, 2015

Posted by **Romar** on Saturday, July 20, 2013 at 2:24am.

- physics -
**Steve**, Saturday, July 20, 2013 at 3:20pmc = cliff height

h = lighthouse hight

a = distance of A from cliff

b = distance of B from cliff

c/a = tan 23°

(c+h)/a = tan 40°

(c+h)/b = tan 17°

So, clearing fractions and plugging in the trig values, we have

c = .4245a

c+h = .8391a

c+h = .3057b

b = a+1320

h = 313.65

c = 321.14

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