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tan v+tan36^(@)+tan9^(@)tan36^(@)=1...

tan v+tan36^(@)+tan9^(@)tan36^(@)=1

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Prove that: i) tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

Prove that: i) tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

tan9^(@)+tan36^(@)+tan9^(@)tan36^(@)=1

The value of tan9^(@)+tan36^(@)+tan9^(@)*tan36^(@) is equal to

Evaluate : tan7^(@)tan23^(@)tan60^(@)tan67^(@)tan83^(@)+(cot54^(@))/(tan36^(@))+sin20^(@)sec70^(@)-2

Evaluate : tan7^(@)tan23^(@)tan60^(@)tan67^(@)tan83^(@)+(cot54^(@))/(tan36^(@))+sin20^(@)sec70^(@)-2

Statement-1: sin^(2)6^(@) + sin^(2)12^(@) + sin^(2)18^(@) +……..+ sin^(2)84^(@)=7 Statement-2: tan9^(@) tan27^(@) tan45^(@) tan36^(@) tan81^(@)=1 Statement-3: (tan(pi/4) + cot(pi/4) + " cosec " pi/4) (tan(pi/4) + cot(pi/4) - " cosec "pi/4) = sec ^(2)pi/3

Statement-1: sin^(2)6^(@) + sin^(2)12^(@) + sin^(2)18^(@) +……..+ sin^(2)84^(@)=7 Statement-2: tan9^(@) tan27^(@) tan45^(@) tan36^(@) tan81^(@)=1 Statement-3: (tan(pi/4) + cot(pi/4) + " cosec " pi/4) (tan(pi/4) + cot(pi/4) - " cosec "pi/4) = sec ^(2)pi/3

Prove that: (a) tan 20^(@)tan40^(@)tan60^(@)tan 80^(@)=3 (b) tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=4