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If sin(A-B) =1/2 and cos(A+B) =1/2, wher...

If `sin(A-B) =1/2` and `cos(A+B) =1/2`, where `A>B>0^@`, and A+B is an acute angle, then the value of A is:
यदि `sin(A-B) =1/2` and `cos(A+B) =1/2` तो A+B का मान ज्ञात करें , जहाँ `A>B>0^@` और A एक न्यून कोण है

A

`45^@`

B

`30^@`

C

`15^@`

D

`75^@`

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