Page 117 - Math SL HB Sem 1
P. 117
CIRCULAR FUNC'[IONS r\NI) TIII(iONOMETRY
.
SOLUTION OF TRIANGLES
The sine rule
For any triangle ABC,
abc
sinl sinB sinC
The sine rule is used to find the remaining sides and angles ol-a (non_right-angled)
triangle if we are given
o two angles and one side
o two sides and a non-included
angle (* anrbiguous case)
:
Example I : In triangle ABC, A = 35 ", B
50 " and a = I 7 cm. Find b
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