1.limx→0cos7x∘−cos2x∘x2\displaystyle\lim_{x\to0}\frac{\cos7x^\circ-\cos2x^\circ}{x^2}x→0limx2cos7x∘−cos2x∘ isa.−452π2-\frac{45}{2}\pi^2−245π2b.−452π-\frac{45}{2}\pi−245πc.−π21440-\frac{\pi^2}{1440}−1440π2d.−π22880-\frac{\pi^2}{2880}−2880π2Login to continueOnly logged in users canattempt or see the solution.
