If cos alpha = -12 /13, π/2 < alpha< π; tan beta 7/24 , π<beta<3π/2 ,
find sin (alpha+ beta), cos (alpha+beta) and cot (alpha+ beta). In which quadrant does (alpha+ beta) lie ?
find sin (alpha+ beta), cos (alpha+beta) and cot (alpha+ beta). In which quadrant does (alpha+ beta) lie ?
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