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

given the equation y = 2x - 8 what is the slope and the y-intercept

i need helpWhat is the Endocrine system? What does it do? What is homeostasis and the function it has in our bodies? Name the glands of the Endocrine System.

What were two reasons why the Founders gave more power to the states rather than the federal government under the Articles of Confederation?

If set M =[even digits from 2 to 8]. Find n(M)

Yuto has a bag containing 3 red marbles, 5 blue marbles, 2 green marbles, and 8 yellow marbles. Rin reaches into the bag, pulls out a blue marble, and puts it i

Based on Source 2, which statement best describes a reason why women lost their independence? A Women lost independence when they became teachers. B Women lost

2. Why doesn't David like bowling when Ollie Young Bear is around?

le lycée l'école primaire le brevet le collège

Which of the following is a biotic in an ecosystem? A. Wind B. Tree leaves C. Small rocks D. Light from the sun

All of the following were part of Hamilton's Financial Plan EXCEPT FOR a Ob C State Banks Assumption of all state Revolutionary War debts Adopt Capitalism as ba