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In small-angle modeling (e.g., pendulum motion), the Maclaurin series for cosx is often used to approximate cosθ where θ is measured in radians and is close to zero.
Write down the first four non-zero terms of the Maclaurin series for cosx.
Use your result from part (a) to estimate cos(0.3) correct to 4 significant figures.
In small-angle modeling (e.g., pendulum motion), the Maclaurin series for cosx is often used to approximate cosθ where θ is measured in radians and is close to zero.
Write down the first four non-zero terms of the Maclaurin series for cosx.
Use your result from part (a) to estimate cos(0.3) correct to 4 significant figures.