Question #c15e5

1 Answer
P dilip_k
Jan 13, 2018

#(sintheta+costheta)/(sintheta-costheta)+(sectheta+csctheta)/(sectheta-csctheta)#

#=(sintheta/sintheta+costheta/sintheta)/(sintheta/sintheta-costheta/sintheta)+(sectheta/sectheta+csctheta/sectheta)/(sectheta/sectheta-csctheta/sectheta)#

#=(1+cottheta)/(1-cottheta)+(1+cottheta)/(1-cottheta)#

#=2((1+cottheta)/(1-cottheta))#

#=2((1+9/12)/(1-9/12))#

#=2((21/12)/(3/12))#

#=2(21/3)#

#=2*7=14#

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