What is the area of triangle lmn? 3 square units 4 square units 6 square units 8 square units

The base length of the triangle is 4 units, u can count that. and the height of triangle is 2 units, thats the dotted line one.
and the equation of triangle area is (length x height) divided by 2
so in this case it'll be
(4x2) /2
=4 square units

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.