<p>@MITer94 Thanks for helping!</p>
<p>You said the bolded formula is the law of cosdines. But SparkNotes ADDED 2<em>5</em>7 when in reality it should be subtracted (look at the bolded formula once again). Am I misinterpreting something?</p>
<p>@MITer94 Thanks for helping!</p>
<p>You said the bolded formula is the law of cosdines. But SparkNotes ADDED 2<em>5</em>7 when in reality it should be subtracted (look at the bolded formula once again). Am I misinterpreting something?</p>