An angle-modulated signal has the form u(t) = 100 cos [2πfct+4 sin 2πfmt ],where fc =10MHz and fm = 1 kHz. Determine the modulation index
βf or βp and the transmitted signal bandwidth, with BFM = 2(βf +1)fm or BPM = 2(βp +1)fm, (a) If this is an FM signal. (b) If this is a PM signal