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pogonyaev
3 years ago
9

Given: triangle ABC with side lengths a, b, and c, and height h Prove: Area = 1/2absin C

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
6 0

Answer:

Step-by-step explanation:

                    Statements                                        Reasons

1). ΔABC with side lengths a, b, c, and h      1). Given

2). Area = \frac{1}{2}bh                                                 2). Triangle area formula

3). \text{sin}C=\frac{h}{a}                                                    3). Definition of sine

4). asin(C) = h                                                4). Multiplication property of

                                                                          equality.

5). Area = \frac{1}{2}ba\text{sin}C                                         5). Substitution property

6). Area = \frac{1}{2}ab\text{sin}C                                         6). Commutative property of

                                                                           multiplication.

Hence, proved.

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