What is the length of BC? Round to the nearest tenth

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Indicate the formula for the following conditions: p^c(n,r)=

]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