Trigonometric Ratios table Problems and Solutions

Evaluate $\dfrac{3\sin{3x}+2\cos{(2x+5^\circ)}}{2\cos{3x}-\sin{(2x-10^\circ)}}$ if $x = 20^\circ$

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Evaluate $\displaystyle \large \lim_{x \,\to\, 2}{\normalsize (x^3-5x+6)}$ by Direct substitution