In ΔABC,let L,M,N be the feet of the altitudes. Then calculate sin(∠MLN)+sin(∠LMN)+sin(∠MNL)
For constructing ΔLMN exactly identical to ΔABC, choose from the options, the measurements required.
For drawing a triangle LMN exactly same as triangle ABC, which of the following minimum conditions are required? (Given M = 90∘)