3 kurang 4 per 5 kali 2 3 per 4

It says that the cosine of Θ is 3/2 , but the cosine of an angle can never be more than ' 1 '.

Answered by AL2006 | 2024-06-10

The inverse cosine can never be outside the domain of [-1,1]. 3/2 is greater than 1, and so there can never be a corresponding angle the cosine of which would give you 3/2. The cosine of any angle can only result in a value between or equal to -1 and 1.
Hope this helps! :)

Answered by kittymaniac | 2024-06-10

The cosine of an angle must be between -1 and 1. The statement that cos ( Θ ) = 2 3 ​ is incorrect, as 1.5 exceeds this range. If you encounter such a value, it indicates a mistake in the question or in calculations.
;

Answered by AL2006 | 2025-06-12

Jawab:Penjelasan dengan langkah-langkah:The calculation "3 kurang 4 per 5 kali 2 3 per 4" translates to the mathematical expression 3 - (4/5) * (2 + 3/4). This simplifies to 3 - (4/5) * (11/4), which equals 3 - 11/5, and finally results in 4/5 or 0.8.Here's the step-by-step solution:Convert the mixed number to an improper fraction: 2 3/4 becomes (2 * 4 + 3) / 4 = 11/4.Multiply 4/5 by 11/4: (4/5) * (11/4) = 44/20.Simplify the fraction 44/20: 44/20 = 11/5.Subtract 11/5 from 3: 3 - 11/5 = (15/5) - (11/5) = 4/5.Convert the fraction to a decimal: 4/5 = 0.8.

Answered by sabarish1305 | 2025-07-12