evaluate tan15° tan25° tan60° tan65° tan75° + tan30°
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idontknoq the anser
Step-by-step explanation:
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Step-by-step explanation:
tan15tan25tan60tan65tan75
=tan(90-75)tan(90-65)tan60tan65tan75tan(90−75)tan(90−65)tan60tan65tan75
=cot 75cot65tan60tan65tan75cot75cot65tan60tan65tan75
cot75-tan75 and cot 65-tan65 both cancelled
=tan60tan60
=\sqrt{3}3
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