SOLUTION: using compound angle formula find a) tan 165 (book ans is -2+square root 3) b) sec 165 pls help me am not the ans. thx in adv

SOLUTION: using compound angle formula find a) tan 165 (book ans is -2+square root 3) b) sec 165 pls help me am not the ans. thx in adv

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Question 1119175: using compound angle formula find
a) tan 165 (book ans is -2+square root 3)
b) sec 165
pls help me am not the ans.
thx in adv
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.

tan(165�) = tan(120�+45�) = 


    tan(120�) = ;  tan(45�) = 1  =============>


=  =  =  .  =  =  = .

Solved.

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