If `cottheta=7/8`, evaluate:(i) `((1+sintheta)(1-sintheta))/((1+costheta)(1-costheta))` (ii) `cot^2theta`

If cot theta= (7)/(8) then the value of ((1+ sintheta)(1-sintheta))/((1+costheta)(1-costheta)) = …………….

((1-sintheta+costheta)^(2))/((1+costheta)(1-sintheta))=?

Evaluate : (( 1 + sintheta ) ( 1 - sintheta )) / ( ( costheta ) ( - costheta ) )

The value of (sintheta)/(1+costheta)+(sintheta)/(1-costheta) is :

(sintheta)/(1+costheta) + (1+costheta)/(sintheta) = 2 cosec theta

((1+sintheta+i costheta)/(1+sintheta-i costheta))^n is equal to

Prove that sintheta/(1-costheta)=cosectheta+cot theta

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

If cos theta-4sintheta=1, the sintheta+4costheta=

The value of sectheta((1+sin theta)/(costheta)+(costheta)/(1+sintheta))-2tan^(2)theta is