यदि sin A = 3/5 , cos B = (-12)/13 जहा...

यदि ` sin A = 3/5 , cos B = (-12)/13 ` जहाँ ` A in [ 0, (pi)/2 , B in ] pi , (3pi)/2` , तो निम्नलिखित के मान ज्ञात कीजिए ।
i) sin ( A − B ) ii) cos ( A − B ) iii) tan ( A + B )

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