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i) sintheta/(1+costheta)=(1-costheta)/si...

i) `sintheta/(1+costheta)=(1-costheta)/sintheta`

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Prove that : (sintheta)/(1+costheta)+(1+costheta)/(sintheta)=2"cosec"theta

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(sintheta)/(1+costheta) is equal to (a) (1+costheta)/(sintheta) (b) (1-costheta)/(costheta) (c) (1-costheta)/(sintheta) (d) (1-sintheta)/(costheta)

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If 0^(@)lethetale90^(@) , then solve the following equations : (i) (costheta)/(1-sintheta)+(costheta)/(1+sintheta)=4 (ii) (cos^(2)theta-3costheta+2)/(sin^(2)theta)=1 (iii) (costheta)/("cosec"theta+1)+(costheta)/("cosec"theta-1)=2

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(sintheta)/(1-cottheta)+(costheta)/(1-tantheta) is equal to (a) 0 (b) 1 (c) sintheta+costheta (d) sintheta-costheta