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Guy
Lv 4
Guy asked in Science & MathematicsMathematics · 9 years ago

Pre-calculus problem, help?

Directions: Triangle ABC has an Area of 2400 with AB= 80, AC= 100 . Determine 2 possible angle measure of angle A . Your answers should be correct to the nearest tenth of a degree.

Can you please give me the show me how to solve it or give me the formula?

1 Answer

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  • ?
    Lv 7
    9 years ago
    Favorite Answer

    area = 1/2 ab sin A

    2400 = 1/2 *80*100 sin A

    sin A = 0.6

    A =36.87 deg.

    sin A = sin (180-A) =143.13 deg.

    A=143.13deg.

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