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Prove that tan 15^@ tan 20^@ tan70^@ tan...

Prove that tan 15^@ tan 20^@ tan70^@ tan 75^@ = 1 | 10 | Trigonometric Identities MATHS | MI...

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Prove that: tan10^(@) tan20^(@)tan70^(@)tan80^(@)=1

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Prove that: tan70^(@)=tan20^(@)+2tan50^(@)

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Prove that: tan20^(@)tan40^(@)tan60^(@)tan80^(@)=3

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