is square root 1-cos^2theta=-sintheta true? if so, in which quadrants does angle theta terminate?

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izzzzy125 izzzzy125

14-06-2022
Mathematics

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is square root 1-cos^2theta=-sintheta true? if so, in which quadrants does angle theta terminate?

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rdacoder rdacoder · Answer 1 · 2022-06-14T22:43:18+02:00

rdacoder rdacoder

14-06-2022

Yes it is true:

(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful

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