The value of ((cos alpha + cos beta)/(si...

The value of `((cos alpha + cos beta)/(sin alpha - sin beta))^(n) + ((sin alpha + sin beta)/(cos alpha - cos beta))^(n)` (where n is a even number ) is equal to-

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(cos alpha + cos beta)/( sin alpha - sin beta) + (sin alpha + sin beta)/( cos alpha - cos beta ) =

The value of ((cos alpha+cos beta)/(sin alpha-sin beta))^(n)+((sin alpha+sin beta)/(cos alpha-cos beta))^(n) (where n is a whole number) is equal to

(cos alpha + cos beta) ^ (2) + (sin alpha + sin beta) ^ (2) =

The value of sin^2 alpha cos^2 beta + cos^2 alpha sin^2 beta + sin^2 alpha sin^2 beta +cos^2 alpha cos^2 beta is

If sin alpha+sin beta=a and cos alpha-cos beta=b then

(sinalpha cos beta+cos alpha sin beta)^2+(cos alpha cos beta-sin alpha sin beta)^2=1

sin alpha + sin beta = a, cos alpha + cos beta = b rArr sin (alpha + beta)