radomes.openskiesproject.org
h6aynerrerakaros
h6aynerrerakaros h6aynerrerakaros
  • 02-09-2016
  • Mathematics
Answered

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

Verified Answer :

HomertheGenius
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

Related Questions

In 1870 if you wanted to travel from Omaha to Sacramento what would be the easiest way to go A Mormon Trail B California Trail C Transcontinental Railroad D San
The following are factors that all performance appraisal system must conform to except a Adaptability b Acceptability c Relevance d Reliability
What type of infrastructure would do the most to prevent cholera outbreaks? A. Clean water supply B. Fixing potholes C. Burying electric cables
what adds to 8 and multiplies to negative 9
between what pair of numbers is the product of 289 and 7
Oliver has some coins in his pocket he counts them and notices that he has 17 coins made up of quarters and nickels In total he has 325
How do you write 592 as a fraction mixed number or whole number in simplest form
when consumers seek to buy goods at the best possible price they are exercising self
666 Written as a fraction
what is the equilibrium constant Keq a ratio of