Prove d/dx(tanx/(1+secx))=csc²x-cotxcscx

Choose the triangle with x equal to 17.

]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

If jklm is a trapezoid, which statements must be true?