{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Law of Sines&amp;Cosines

# Law of Sines&amp;Cosines - The Law of Sines should not...

This preview shows page 1. Sign up to view the full content.

Law of Sines SinA a SinB b SinC c = = Law of Cosines a b c bcCosA b a c acCosB c a b abCosC 2 2 2 2 2 2 2 2 2 2 2 2 = + - = + - = + - Reminders: The Law of Cosines involves 3 sides, so it WILL NOT WORK for (ASA) or (AAS) where there are 2 unknown sides. The Law of Sines involves the ratio of the Sine of an angle to the length of its opposite side, so it WILL NOT WORK where no angle is known (SSS) or where only one angle is known without its opposite side (SAS).
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The Law of Sines should not be used to find angle measures unless it is known in advance if the angle is obtuse or acute. There may only be ONE obtuse angle in a triangle, if any. Suggested Use: Law of Cosines Law of Sines SSS ASA all produce only one SAS AAS possible triangle SSA* SSA* Ambiguous Case 0,1,2 possible triangles...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online