`sqrt((1+costheta)/(1-costheta))=`

Evaluate sqrt((1-cos theta)/(1+costheta))

If sintheta=(7)/(25) ,then find the value of sqrt((-1costheta)/(1+costheta)) .

Prove that (frac(1+sintheta-costheta)(1+sintheta+costheta))=sqrt(1-costheta)/sqrt(1+costheta)

(1-costheta)/(1+costheta)+(1+costheta)/(1-costheta)=

sqrt(1-cos^2theta)/(costheta) = ……………..

(sin^(2)theta)/(costheta(1+costheta))+(1+costheta)/(costheta)=?

a, b, c are non-zero unit vectors inclined pairwise with the same angle theta , p, q, r are non-zero scalars satisfying atimesb+btimesc=pa+qb+rc. Now, answer the following questions. Q. |(q+p)costheta+r| is equal to a. (1+costheta)(sqrt(1-2costheta)) b. 2sin^2((theta)/2)sqrt((1+2costheta)) c. (1-sintheta)sqrt(1+2costheta)) d. None of these

(1-costheta)/(1+costheta)=((1-costheta)/(sintheta))^2=(cosectheta-cottheta)^2

Prove that- (1-costheta)/(1+costheta)=(1/(cosectheta+cottheta))^2

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