Prove that csc x - cot x is the same as (sin x)/(1 + cos x)

Which of the following vectors are orthogonal to (2,1)? check all that apply

How do you write 0.5% as a fraction

The deepest part of the swimming pool is 12 feet deep.the shallowest part of the pool is 3 feet deep.what is the ratio of the deeply of the deepest part of the pool to depth of the shallowest part of a pool?