The longest side in the given ΔABC is AB And, The angle opposite to the longest side is largest ∠C is the largest angle. in the ΔABC find the measure of ∠C Now, Using law of cosine in the given ΔABC : 16² = 9² + 12² - 2 × 9 × 12·cos C 216·cos C = 81 + 144 - 256 216·cos C = -31 cos C = -0.14352 m∠C ≈ 98°

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step-by-step explanation:

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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