cosec A/ cosec A -1 + cosec A / cosec A+1 = 2 sec² A
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hєrє íѕ thє ѕσlutíσn....hσpє thíѕ mαч hєlp uh..
plєαѕє mαrk ít αѕ вrαínlíєѕt αnѕwєr...
plєαѕє mαrk ít αѕ вrαínlíєѕt αnѕwєr...
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