Use the given substitutions to show that the equations are valid for 0 < /2.
Question:
Use the given substitutions to show that the equations are valid for 0 ≤ θ < π/2.
If x = 2 cosθ, show that
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√4x² = 2 sin 0.
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Given x 2 cos Squaring both sides we get x2 2 cos2 x2 4 cos2 Substituti...View the full answer
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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