Show that : 840^ (-945^ )+ 600^ (-690^ ) =3 2 - Vidyadip

Question

Show that : $\sec 840^{\circ} \cdot \cot \left(-945^{\circ}\right)+\sin 600^{\circ} \cdot \tan \left(-690^{\circ}\right) \ =\frac{3}{2}$

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