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Which one of the following is true for 0° ≤ θ ≤ 90°?
- Acos θ > cos2 θ
- Bcos θ < cos2 θ
- Ccos θ ≥ cos2 θ
- Dcos θ ≤ cos2 θ
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Discussion 1
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CCommunity
Between 0° to 90°, cos θ is positive and its value ranges from 0 to 1.
? All numbers less between 0 to 1 is always greater than or equal to its square. For ex., square of ½ = ¼
∴ cos θ ≥ cos2 θ
? All numbers less between 0 to 1 is always greater than or equal to its square. For ex., square of ½ = ¼
∴ cos θ ≥ cos2 θ