find the value of

Asked by  | 17th Jan, 2010, 12:27: PM

Expert Answer:

Dear Student

Tan 45 =1

Sin30=1/2  ==>  Sin 180+30= sin210=-1/2 

Cos 60 =1/2 ==>  cos 180+60 =cos240 =-1/2

so,  tan-1(1) + cos-1(-1/2) +sin-1(-1/2)=45+210+240 =4950

RegardTeam

Topperlearning

Answered by  | 17th Jan, 2010, 12:40: PM

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