Question

tan 30°. tan 135°. tan 150°. tan 45°=​

Answer 1

Answer:

165°

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Answer 2

Answer:

tan 30° = 1/√3

tan 135° = tan(90+45) = - cot45° = - 1

tan 150° = tan(90+60) = - cot60° = - 1/√3

tan 45° = 1

tan 30°.tan135°.tan150°.tan45°

=1/√3 × (-1)×(-1/√3) ×1

=1/3

Answer is 1/3