Question

find the value of tan 15° . tan60° .tan 75°

Answer 1

tan 15° . tan 60 ° . tan 75°
cot (90 ­ 75)° . tan 60° . tan 75°
cot 75° . tan 60° . tan 75°
     ___1___ . tan 60° .° tan 75°
      tan 75

tan 60° = √3

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Answer 2

Answer:√3

Step-by-step explanation:

tan15.tan60.tan75

cot(90-15).tan75.tan60

=cot75.tan75.tan60

1.√3...............tan.cot=1

=√3