Tan5 tan25 tan45 tan85 tan75 =
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Step-by-step explanation:
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Answered by
1
Step-by-step explanation:
tan5° tan25° tan45° tan85° tan75°
= tan5° tan25° tan45° tan(90° - 5°) tan(90° - 25°)
= tan5° tan25° tan45° cot5° cot25°
= tan45°
=1
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Concept Used:
tan(90° - A)= cotA
tanA*cotA =1
tan45° =1
____________&&&&_______________
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