Obtuse angle

The line OH is the height of the triangle DOM, line MN is the bisector of angle DMO. obtuse angle between the lines MN and OH is four times larger than the angle DMN. What size is the angle DMO? (see attached image)

Result

∠ DMO =  60 °

Solution:

Solution in text ∠ DMO =







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To solve this example are needed these knowledge from mathematics:

See also our right triangle calculator. See also our trigonometric triangle calculator.

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