" 65."sqrt((1-cos B)/(1+cos B))=cosec B-cot B

If in Delta ABC , angle C = 90 ^(@) , prove that : sqrt((1-sin A)/(1+cos B))= sec A -cot B

Prove the following identities : sqrt ((1 - cos A) /(1 + cos A)) = cosec A - cot A

If pi lt theta lt 2pi then sqrt ((1+cos theta)/(1-cos theta))= a. cosec theta+cot theta , b. cosec theta - cot theta , c. cot theta-cosec theta , d. -cosectheta - cot theta

If none of A,B, A+B is an integral multiple of pi , then prove that (1- cos A+ cos B- cos (A+B))/(1+ cos A- cos B - cos (A+B))=tan.(A)/(2) cot. (B)/(2)

Prove that , (Cot A-cos A)/(cot A+cos A)=(cosec A-1)/(cosec A+1)

Prove that (1-cos A+cos B-cos(A+B))/(1+cos A-cos B-cos(A+B))=tan((A)/(2))cot((B)/(2))

In Delta ABC, show that (1-cos A+cos B+cos C)/(1-cos C+cos A+cos B)=tan((A)/(2))cot((C)/(2))

The value of sqrt((cosec ∅- cot∅)/(cosec∅ + ccot ∅)) ÷ sin∅/(1 + cos ∅) is equal to: sqrt((cosec ∅- cot∅)/(cosec∅ + ccot ∅)) ÷ sin∅/(1 + cos ∅) का मान बराबर है :

(1-cos A+cos B-cos(A+B))/(1+cos A-cos B-cos(A+B))=(tan A)/(2)(cot B)/(2)