Find the Exact Values of S in the Given Interval $$[ - \pi , \pi ) ; 2 \cos ^ { 2 } \mathrm {~s} = 1$$

question 153

Multiple Choice

Find the exact values of s in the given interval that satisfy the given condition.
- $$[ - \pi , \pi ) ; 2 \cos ^ { 2 } \mathrm {~s} = 1$$

• A) \(\frac { \pi } { 4 } , \frac { 3 \pi } { 4 } , \frac { 5 \pi } { 4 } , \frac { 7 \pi } { 4 }\)
• B) \(- \frac { 7 \pi } { 4 } , - \frac { 5 \pi } { 4 } , - \frac { 3 \pi } { 4 } , - \frac { \pi } { 4 }\)
• C) \(- \frac { 2 \pi } { 3 } , - \frac { \pi } { 3 } , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 }\)
• D) \(- \frac { 3 \pi } { 4 } , - \frac { \pi } { 4 } , \frac { \pi } { 4 } , \frac { 3 \pi } { 4 }\)

Understand the relationship between government budget balances and real interest rates.

Comprehend how changes in government budget affect domestic investment and net capital outflow.

Grasp the concept of net capital outflow and its independence or dependence on the real exchange rate.

Analyze the effects of fluctuations in the exchange and interest rates on the open-economy macroeconomic model.

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