Maths Trig rules
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Notes
Area, sin & cos rule
Sin Rule (THE AMBIGUOUS CASE)
, Sin Rule
In △ ABC
2 side + included angel
1 side + 2 angels
Put unknown at the top
1. Find x
x/sin80 = 7/sin60
2. Find a
sina/16 = sin(other <)/9
✍
Notes
Area, sin & cos rule
Sin Rule (THE AMBIGUOUS CASE)
, Sin Rule
In △ ABC
2 side + included angel
1 side + 2 angels
Put unknown at the top
1. Find x
x/sin80 = 7/sin60
2. Find a
sina/16 = sin(other <)/9