Area of a Triangle Using Sine
Posted by Professor Cram in Angle Functions
Area of a Triangle Using Sine
How do you figure out the area of a triangle if you only know two sides and the angle between them? This formula solver will show you!
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Click one of these links to get more help from another Cramlet in this same chapter:
- Soh-Cah-Toa and Trigonometry Functions
- Non-Right Triangles Study Sheet
- Angle Functions Quiz
- My Angle Functions Flashcards
- Tangent & ArcTangent in a Right Triangle
- Tangent Function in a Right Triangle
- Sine & ArcSine in a Right Triangle
- Sine Function in a Right Triangle
- Secant Function in a Right Triangle
- Radians
- Law of Sines Ambiguous Case
- Law of Sines
- Law of Cosines
- Cotangent Function in a Right Triangle
- Cosine & ArcCosine in a Right Triangle
- Cosine Function in a Right Triangle
- Cosecant Function in a Right Triangle
- Area of a Triangle Using Sine
The “Law of Sines” page is a bit confusing because of a mistake in capitalization in the equation. It should specify which A to use in each individual instance. like “a/sin A = b/sin B” and “sin A/a = sin B/b”
the formula uses cos, but i thought it was supposed to be the “Area of a Triangle Using Sine”.
Woops, good catch Alex. The original formula should read ab sin(C)/2. It does use the sine function as you step through the process, though.
Sorry about that, folks!