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Definition
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| Area of a Sector: Radian Form |
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| Area of a Sector: Degree Form |
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| Area of a Segment= Area of a Sector - 1/2(a)(b)(sinC) |
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| Things to keep in mind when checking the # of solutions |
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Definition
*only check when you are given 2 sides & 1 angle. The angle and 1 of the sides will have the same letter.
*if a > (b), there is only one triangle |
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| How to check for # of Solutions |
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Definition
| a=bsinA - 1 Solution
absinA - 2 Solutions |
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Definition
a²=b²+c²-(2)(b)(c)(cosA)
b²=a²+c²-(2)(a)(c)(cosB)
c²=b²+a²-(2)(b)(a)(cosC) |
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| Law of Cosines: Keep in Mind |
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Definition
*The cosine and the letter the equation equals (for example in: a²=b²+c²-(2)(b)(c)(cosA), the cosA and a²) match up.
*Solve for the BIGGEST (colossal) angle/side |
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| Circumference of a Circle |
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| When asked for linear velocity |
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Definition
Put one thing over the other (ex. miles/hour), multiply and cancel out until you get the units you want (ex. revs/min)
*remember there are 5280 ft in a mile
*2π radians per revolution |
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Term
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Definition
Sine= Opposite/Hypotenuse
Cosine= Adjacent/Hypotenuse
Tangent= Opposite/Adjacent |
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