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cos⁡(x)=−0.3\cos(x) = -0.3. What is sin⁡(90∘−x)\sin(90^\circ - x)? ____

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Q. cos⁡(x)=−0.3\cos(x) = -0.3. What is sin⁡(90∘−x)\sin(90^\circ - x)? ____
  1. Apply co-function identity: We know that sin⁡(90°–x)\sin(90° – x) is equal to cos⁡(x)\cos(x) due to the co-function identity for sine and cosine, which states that sin⁡(90°–θ)=cos⁡(θ)\sin(90° – \theta) = \cos(\theta) for any angle θ\theta. Since cos⁡(x)\cos(x) is given as –0.3–0.3, we can directly state that sin⁡(90°–x)\sin(90° – x) is also –0.3–0.3.

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