Q. The angle θ1 is located in Quadrant II, and cos(θ1)=−112.What is the value of sin(θ1) ? Express your answer exactly.sin(θ1)=
Use Pythagorean Identity: We know that cos(θ1)=−112. Use the Pythagorean identity sin2(θ)+cos2(θ)=1 to find sin(θ1).Substitute −112 for cos(θ1) in the identity.sin2(θ1)+(−112)2=1.
Simplify to Find sin: Simplify the equation to find the value of sin2(θ1).sin2(θ1)+1214=1.sin2(θ1)=1−1214.sin2(θ1)=121121−1214.sin2(θ1)=121117.
Find sin(θ): Find the square root of sin2(θ1) to get sin(θ1). Since θ1 is in Quadrant II, sin(θ1) is positive. sin(θ1)=117/121. sin(θ1)=117/121. sin(θ1)=117/11.
Determine Simplified Form: Determine the simplified form of 117.117 is 3×3×13, so 117 simplifies to 3×13. Therefore, sin(θ1)=113×13.
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