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OpenStudy (anonymous):
Prove the trigonometric identity: sec^2xcotx-cotx=tanx
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OpenStudy (lalaly):
sec^2x cotx - cotx = tanx Factor out cotx..... cotx * (sec^2x - 1) = tanx Use trig identity for (sec^2x - 1): cotx * (tan^2x) = tanx Convert cotx to tanx: 1/tanx * tan^2x = tanx Simplify: tanx = tanx
OpenStudy (anonymous):
OpenStudy (lalaly):
yeh that way too :D...
OpenStudy (anonymous):
crazy o.O
OpenStudy (lalaly):
hahaha
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