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7-21. Evaluate each expression below for a when a=2//3, if possible. enter b. 3a c. (a)/(0) d. (0)/(a)

77−21-21. Evaluate each expression below for a a when a=2/3 a=2 / 3 , if possible.\newlineenter\newlineb. 3a 3 \mathrm{a} \newlinec. a0 \frac{a}{0} \newlined. 0a \frac{0}{a}

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Sin, cos, and tan of special anglesright chevron icon

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Q. 77−21-21. Evaluate each expression below for a a when a=2/3 a=2 / 3 , if possible.\newlineenter\newlineb. 3a 3 \mathrm{a} \newlinec. a0 \frac{a}{0} \newlined. 0a \frac{0}{a}
  1. Evaluate Expression: Evaluate 7−217-21 for aa when a=23a=\frac{2}{3}.\newlineCalculation: 7−21=−147 - 21 = -14.
  2. Calculate 3a3a: Evaluate 3a3a for aa when a=23a=\frac{2}{3}.\newlineCalculation: 3×(23)=23 \times \left(\frac{2}{3}\right) = 2.
  3. Division by Zero: Evaluate (a)/(0)(a)/(0) for aa when a=23a=\frac{2}{3}.\newlineReasoning: Division by zero is undefined.
  4. Calculate 0/a0/a: Evaluate (0)/(a)(0)/(a) for aa when a=2/3a=2/3.\newlineCalculation: 0/(2/3)=00 / (2/3) = 0.

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