Evaluate
(tan 45° + tan 60°) . (2 cot 45 - cot 30)
tan25 cot"27" cot-60 cot-63°tan 659
cot 14' cot 48°
tan 42 tan 76
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Answer:
(tan 45°+ tan60°). (2 cot 45° - cot30°)
= 1 + √3 . 2. 1 - √3
=1 + √3 . 2-√3
= √3 - 1
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