0 0 votes Given $x(t)=4 \sin (15 \pi t)+7 \cos (4 \pi t)$, where $t$ is in seconds.The fundamental period of $x(t)$ is $\_\_\_\_\_\_$ seconds.$15$$60$$30$$2$ Signals and Systems gatein-2026 signals-and-systems numerical-answers + – gatecse 2.8k points answer 0 reply