Question

Write the simplest form tan minus 1 cos x minus sin x upon cos x + sin x

Answer 1

Answer:

Step-by-step explanation:

tan  −1  (  cosx+sinx /cosx−sinx  ) =tan  −1  (  1+  

cosx

sinx /1−  cosx sinx  ) =tan  −1  (  1+tanx /1−tanx  )

=tan  −1  (tan(  4 π  −x))

=  4 π  −x

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