Verify the identity:
(1 + tan^2x)(1 - sin^2x) = 1
i know the solution, but not th...
Mathematics, 29.10.2019 23:31 chessacs2950
Verify the identity:
(1 + tan^2x)(1 - sin^2x) = 1
i know the solution, but not the steps to get me the answers i need. i will need to know how to do this on my own for a test soon, so any explanations will be appreciated.
solution, kinda: (1 + tan^2x)(1 - sin^2x) = sex^2x * cos^2x = 1/cos^2x = 1
here are some identities that i'm pretty sure need to be used, but i'm not sure how or in what context to use them.
quotient identities:
tan x = (sin x)/(cos x)
cot x = (cos x)/(sin x)
reciprocal identities:
csc x = 1/(sin x)
sec x = 1/(cos x)
cot x = 1/(tan x)
pythagorean identities:
sin^2x + cos^2x = 1
sec^2x = 1 + tan^2x
csc^2x = 1 + cot^2x
any and all will be greatly appreciated!
Answers: 3
Mathematics, 21.06.2019 22:40
Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.
Answers: 3
Mathematics, 22.06.2019 02:30
Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75
Answers: 1
Mathematics, 22.06.2019 03:00
Barrett is comparing the membership fees for two museums.the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?
Answers: 3
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
English, 17.11.2020 01:00
Mathematics, 17.11.2020 01:00
History, 17.11.2020 01:00