![\bf \textit{Pythagorean Identities} \\\\ sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta )=1-sin^2(\theta ) \\\\[-0.35em] ~\dotfill\\\\ \cfrac{[cos(x)]^2[tan(x)]^2-1}{[cos(x)]^2}\implies \cfrac{cos^2(x)tan^2(x)-1}{cos^2(x)}\implies \cfrac{cos^2(x)\frac{sin^2(x)}{cos^2(x)}-1}{cos^2(x)} \\\\\\ \cfrac{sin^2(x)-1}{cos^2(x)}\implies \cfrac{-[1-sin^2(x)]}{cos^2(x)}\implies \cfrac{-cos^2(x)}{cos^2(x)}\implies -1](/tpl/images/0396/7811/b7117.png)
(cos x)^2 (tan x)^2 -1 …divided by… (cos x)^2
simplify.
...
Answers: 2
Another question on Mathematics
Mathematics, 21.06.2019 15:30
Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3
Answers: 2
Mathematics, 22.06.2019 03:00
Determine whether the question is a statistical question. explain. 1. what is the eye of sixth grade students? 2. at what temperature (in degree fahrenheit) does water freeze? 3. how many pages are in the favorite books of students your age? 4. how many hours do sixth grade students use the internet each week? you!
Answers: 3
You know the right answer?
Questions
Chemistry, 22.10.2020 21:01
Chemistry, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Spanish, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Biology, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Chemistry, 22.10.2020 21:01
Mathematics, 22.10.2020 21:01
Chemistry, 22.10.2020 21:01
Health, 22.10.2020 21:01
Advanced Placement (AP), 22.10.2020 21:01
