Please help on math?

The crows nest of a pirate ship is 22m above the water level. A pirate sitting at the crows nest spots a dolphin at an angle of depression of 15 degrees, in the direction of South 20 degrees East. He also spots a shark at an angle of depression of 23 degrees in the direction of South 45 degrees east. How many... show more The crows nest of a pirate ship is 22m above the water level. A pirate sitting at the crows nest spots a dolphin at an angle of depression of 15 degrees, in the direction of South 20 degrees East. He also spots a shark at an angle of depression of 23 degrees in the direction of South 45 degrees east. How many meters is the dolphin from the shark?
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