HELP DUE IN 10 MINS!

Attached is the Question.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle

Vertical angles must check all that apply