Question Number 20559 by khamizan833@gmail.com last updated on 28/Aug/17
Answered by Tinkutara last updated on 28/Aug/17
$${Squaring}\:{and}\:{adding}\:{the}\:{two}\:{equations}, \\ $$$$\mathrm{9}+\mathrm{16}+\mathrm{24}\left(\mathrm{sin}\:{A}\mathrm{cos}\:{B}+\mathrm{cos}\:{A}\mathrm{sin}\:{B}\right)=\mathrm{1} \\ $$$$\mathrm{24sin}\:\left({A}+{B}\right)=−\mathrm{24} \\ $$$$\mathrm{sin}\:{C}=−\mathrm{1}\Rightarrow{This}\:{condition}\:{is}\:{not} \\ $$$${possible}.\:{Some}\:{error}\:{in}\:{the}\:{question}. \\ $$