Solve the following equation:`cos^2theta-sintheta costheta-1/2=0`

Solve the following equation: costheta+cos3theta-cos2theta=0

Solve the following equation: costheta+cos2theta+cos3theta=0

Solve the following equation: costheta\ cos2theta\ cos3theta=1/4

Solve the following equation: \ 2cos^2theta-5\ costheta+2=0

Solve the following equation: costheta+sintheta=cos2theta+sin2theta

Solve that following equations : 2cos^2theta+3sintheta=0

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 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

Solve the equation 2cos^2theta+3sintheta=0

Solve the equation 2cos^2theta+3sintheta=0