Log[ tan 5 deg] + log[ tan 25deg] + log[tan85deg]=
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Step-by-step explanation:
tan(5°+85°)=tan5°+tan85°
1-tan5°tan85°
tan90°=tan5°+tan85°
1-tan5°tan85°
1. =tan5°+tan85°
0 1-tan5°tan85°
1-tan5°tan85°=0
tan5°tan85°=1
log tan5°+log tan85°+log tan25°
log(tan5°tan85°tan25°)
log(1×tan25°)
log(tan25°)
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