Trigonometry

Asked by  | 1st Jul, 2008, 11:54: PM

Expert Answer:

tan 7° .tan 60°.tan 23°.tan 67°.tan 83°

=tan (90-83). tan 83 .tan 60. tan (90-67). tan 67

= cot 83. tan 83. tan 60. cot 67. tan 67

= 1/tan 83. tan 83. tan 60. 1/tan 67. tan 67

= tan 60 = 3

Answered by  | 4th Jul, 2008, 12:58: AM

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