please help me in solving these question
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→ (D) x = 2 , y = π/2
Step-by-step explanation:
x² -4x +5 - siny = 0
we start to solve normally by using the quadratic formula
x = 4 ±√(16 -20+4siny) ÷2 = 4 ±√( 4siny - 4) ÷2 = 2 ± √ (siny -1)
x = 2 ± √ (siny -1)
The best solution is → (D) x = 2 , y = π/2
because it satisfies the last step
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