Use the image below to answer the following question. what relationship do the ratios of sin x° and cos y° share?

the ratios are both identical ( 3 over 5 and 3 over 5 ).

the ratios are opposites ( negative 3 over 5 and 3 over 5 ).

the ratios are reciprocals ( 3 over 5 and 5 over 3 ).

the ratios are both negative ( negative 5 over 3 and negative 3 over 5 ).

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.