h6aynerrerakaros h6aynerrerakaros

02-09-2016
Mathematics

contestada

Which of the following are identities? A) sin^2x - cos^2x = 1 . B) sin^2x = 1 - cos^2x . C) tan^2x = 1 + sec^2x . D) cot^2x = csc^2x - 1

Respuesta :

HomertheGenius HomertheGenius

10-09-2016

B ) sin² x = 1 - cos² x
sin² x + cos² x = 1 ( correct )
D ) cot² x = csc² x - 1
cos²x / sin²x = 1/sin²x - 1 = (1-sin²x) / sin²x = cos²x/sin²x
Identities are B ) and D).

Answer Link

Otras preguntas

An atom with more or less neutrons than expected is a what ?

gold is one of the costlier metals.begin: very few

find the sum of the following 7x³+5x²-2x+1 and 8x³-4x+4-12

Please help Nazca,Inca, Aztec, Olmec, Ancestral Puebloans place the following in the civilizations in order of when they begin from earliest civilization at the

SELECT TWO reasonable first steps for solving the equation 2(4x-11)=10. A. Divide each side of the equation by 2. B. Divide each side of the equation 10. C. Mu

2 points In a drawer of 10 pairs of socks, 3 are white, 4 are grey, 2 are black, and 1 pair is blue. You randomly pick a sock and look to see what color it is.

Round 45,621 to the nearest ten thousand.

What is money that a borrower owes a lender? credit O debt O income O loan

can you help me determine whether each of the following is the graph of a funtion , please

What is one central idea of I Know Why the Caged Bird Sings? It's important for people to feel a sense of acceptance and belonging. It is foolish and selfish to