Aspire Faculty ID #16323 · Topic: NIMCET 2010 · Just now
NIMCET 2010

Value of $\sqrt{3}\cos 20^\circ - 4\cos 20^\circ$ is:

Solution

$\cos 20^\circ(\sqrt{3}-4)$ is negative because $(\sqrt{3}-4)<0$. Compute approximate: $\cos20^\circ \approx 0.94$ $\sqrt{3}-4 \approx -2.268$ Product ≈ $-2.13$ Which is none of the options 1, -1, 0.

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