in rhombus math the side measures 12 units and the longer diagonal measures 18 units find the nearest degree the measure of the larger angle of the rhombus​

Sagot :

Answer:

I thought that the answer is 97°

Step-by-step explanation:

1²=a²+h² -2ahcosT

18²=12²+12² -2(12)(12)cosT

324=288-288cosT

36= -288cosT

-.125=cosT

cos-¹ (-.125)=97°

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