Question

19. Prove that :
sec?(tan-'2) + cos bneccot-'3) = 15​

Answer 1

Answer:

sec2 (tan–1 2) + cosec2 (cot–1 3)= {sec (tan–1 2)}2 + {cosec (cot–1 3)}2

hope this helped you

(pls mark me the brainliest)