Answer:
cot(54°)/tan(36°)+tan(20°)/cot(70°)-2=?
Answer:-
=we can write cot(54°)=tan(90°-36°)
and tan(20°)=cot(90°-70°)
=(tan36°/tan36°)+(cot 70°/cot70°)-2
=1+1-2
=2-2
=0
Hence,
prooved
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Answers & Comments
Answer:
cot(54°)/tan(36°)+tan(20°)/cot(70°)-2=?
Answer:-
=we can write cot(54°)=tan(90°-36°)
and tan(20°)=cot(90°-70°)
=(tan36°/tan36°)+(cot 70°/cot70°)-2
=1+1-2
=2-2
=0
Hence,
prooved