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The angle 
theta_(1) is located in Quadrant II, and 
cos(theta_(1))=-(22)/(29).
What is the value of 
sin(theta_(1)) ? Express your answer exactly.

sin(theta_(1))=

The angle θ1 \theta_{1} is located in Quadrant II, and cos(θ1)=2229 \cos \left(\theta_{1}\right)=-\frac{22}{29} .\newlineWhat is the value of sin(θ1) \sin \left(\theta_{1}\right) ? Express your answer exactly.\newlinesin(θ1)= \sin \left(\theta_{1}\right)=

Full solution

Q. The angle θ1 \theta_{1} is located in Quadrant II, and cos(θ1)=2229 \cos \left(\theta_{1}\right)=-\frac{22}{29} .\newlineWhat is the value of sin(θ1) \sin \left(\theta_{1}\right) ? Express your answer exactly.\newlinesin(θ1)= \sin \left(\theta_{1}\right)=
  1. Quadrant II and Pythagorean Identity: We know that in Quadrant extII ext{II}, the sine function is positive, and we can use the Pythagorean identity extsin2(θ)+extcos2(θ)=1 ext{sin}^2(\theta) + ext{cos}^2(\theta) = 1 to find the value of extsin(θ) ext{sin}(\theta).
  2. Substituting cos(θ1) \cos(\theta_{1}) into the Identity: First, we substitute the given value of cos(θ1) \cos(\theta_{1}) into the Pythagorean identity.sin2(θ1)+(2229)2=1\sin^2(\theta_{1}) + \left(-\frac{22}{29}\right)^2 = 1
  3. Calculating the Square of cos(θ1)\cos(\theta_{1}): Next, we calculate the square of cos(θ1)\cos(\theta_{1}).(2229)2=484841\left(-\frac{22}{29}\right)^2 = \frac{484}{841}
  4. Substituting the Value Back into the Identity: Now, we substitute this value back into the Pythagorean identity. sin2(θ1)+484841=1\sin^2(\theta_{1}) + \frac{484}{841} = 1
  5. Solving for sin2(θ1)\sin^2(\theta_{1}): We then solve for sin2(θ1)\sin^2(\theta_{1}).sin2(θ1)=1484841\sin^2(\theta_{1}) = 1 - \frac{484}{841}
  6. Subtracting the Fraction from 11: Subtracting the fraction from 11 gives us:\newlinesin2(θ1)=841841484841\sin^2(\theta_{1}) = \frac{841}{841} - \frac{484}{841}
  7. Simplifying the Subtraction: Simplifying the subtraction, we get: sin2(θ1)=841484841\sin^2(\theta_{1}) = \frac{841 - 484}{841}
  8. Performing the Subtraction in the Numerator: Performing the subtraction in the numerator gives us: sin2(θ1)=357841\sin^2(\theta_{1}) = \frac{357}{841}
  9. Taking the Positive Square Root: Since we are looking for sin(θ1)\sin(\theta_{1}) and we know it should be positive in Quadrant II, we take the positive square root of the result.\newlinesin(θ1)=357841\sin(\theta_{1}) = \sqrt{\frac{357}{841}}
  10. Simplifying the Square Root: Simplifying the square root, we find that 841841 is a perfect square, being 29229^2, so:\newlinesin(θ1)=35729\sin(\theta_{1}) = \frac{\sqrt{357}}{29}

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