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Find the values of θ between 0° and 360° satisfying the equation 5 sin θ = -4.

Mathematics

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Answer

100π cm3100\pi \text{ cm}^{3}

Step-by-step solution

2 steps
  1. Find the height hh using the slant height formula.

    l2=r2+h2l^{2} = r^{2} + h^{2}

    Substitute r=5r = 5 cm and l=13l = 13 cm:

    132=52+h213^{2} = 5^{2} + h^{2} 169=25+h2169 = 25 + h^{2} h2=169−25h^{2} = 169 - 25 h2=144h^{2} = 144 h=144h = \sqrt{144} h=12 cmh = 12 \text{ cm}
  2. Find the volume VV of the cone.

    V=13πr2hV = \frac{1}{3} \pi r^{2} h

    Substitute r=5r = 5 cm and h=12h = 12 cm:

    V=13π(5)2(12)V = \frac{1}{3} \pi (5)^{2} (12) V=13π(25)(12)V = \frac{1}{3} \pi (25) (12) V=13π(300)V = \frac{1}{3} \pi (300) V=100π cm3V = 100 \pi \text{ cm}^{3}

    100\pi cm^{3}

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