" 63.The value of "((sin A-sin B)/(cos A+cos B))^(2020)+((cos A-cos B)/(sin A+sin B))^(2020)=

sin A-sin B and cos A + cos B

Prove that (sin A+sin B)/(cos A+cos B)+(cos A-cos B)/(sin A-sin B)=0

If A = 60 ^(@) and B = 30 ^(@) , find the value of (sin A cos B+ cos A sin B)^(2) + (cos A cos B - sin A sin B )^(2)

Prove that : (sin A - sin B)/ (cos A + cos B) + (cos A - cos B)/ (sin A + sin B) = 0

(sin A-sin B)/(cos A + cos B) is equal to

Prove each of the following identities : ((sin A - sin B))/((cos A + cos B)) + (( cos A - cos B))/((sin A + sin B)) =0

((cos A+cos B)/(sin A-sin B))^(2007)+((sin A+sin B)/(cos A-cos B))^(2007)=

(cos A)/(sin B sin C)+(cos B)/(sin C sin A)+(cos C)/(sin A sin B)=2

The value of ((cos A + coa B)/( sin A - sin B)) ^(2015) + ((sin A + sin B)/( cos A - cos B)) ^(2015) =