solve only if u know ...wrong ans will reported ok
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Hey there!!!
tan 1/2 [ sin¯¹ 2x/1+x + cos¯¹ 1-y²/1+y²] |x| <1, y>0 and xy <1
Now, from the attachment,
=> tan 1/2 [ sin¯¹ 2x/1+x + cos¯¹ 1-y²/1+y²]
=> tan 1/2 [2tan¯¹ x +2tan¯¹ y]
=> tan [ tan¯¹ x +tan¯¹ y]
=> tan [tan¯¹ (x+y / 1-xy)]
=> x+y / 1-xy
Hope it helps....
pls mark brainliest
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