Simplify: sin(a) + cos(a)cot(a) - csc(a)
(A) 0
(B) 2sec(a)
(C) 1
(D) tan(a)
(E) 2tan(a)

Which best explains why this triangle is or is not a right triangle?

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !

Vertical angles must check all that apply