Home
Class 12
MATHS
Prove that tan72^(@)=tan18^(@)+2tan54^(@...

Prove that `tan72^(@)=tan18^(@)+2tan54^(@)`.

Promotional Banner

Topper's Solved these Questions

  • IPE SCANNER (TEXUAL BITS)

    SRISIRI PUBLICATION|Exercise Very Short Questions (2 marks) (Hyperbolic Functions)|23 Videos

  • IPE SCANNER (TEXUAL BITS)

    SRISIRI PUBLICATION|Exercise Very Short Questions (2 marks) (Product of vectors )|73 Videos

  • IPE SCANNER (TEXTUAL BITS)

    SRISIRI PUBLICATION|Exercise APPLICATIONS OF DERIVATIVES|48 Videos

  • IPE-MARCH-2016[TS]

    SRISIRI PUBLICATION|Exercise Section-c(III . Answer any five of the following LAQs:)|6 Videos

Similar Questions

Explore conceptually related problems

Prove that tan 72^(@)=tan 18^(@)+2 tan 54^(@)

Prove that tan70^(@)-tan20^(@)=2tan50^(@) .

Prove that tan 50^(@) -tan40^(@)-2tan10^(@) .

Prove that tan 70 - tan 20 ^(@)=2 tan 50^(@)

If tan20^(@)=p then prove that = (tan610^(@)+tan700^(@))/(tan 560^(@)-tan470^(@)) = (1-p^(2))/(1+p^(2))

tan1^(@).tan2^(@).tan3^(@)...tan89^(@)=

Tan20^(@) + 2Tan50^(@) =

Prove that tan A. (tan 60^(@) +A). Tan (60^(@)-A)=tan 3A and hence find the value of tan 6^(@) tan 42^(@) tan 66^(@) tan 78^(@) .

Prove that tan.(A)/(2)+tan.(B)/(2)+tan.(C)/(2)=(bc+ca+ab-s^(2))/(Delta)