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The sinusoid 10sin(50t + 2) has a phasor of the form a + jb. What is a? Use the sum of the first ten terms to approximate the sum of the series. (Hint: Use trig subs & Round your sum to three decimal places)? How strong are golden doodles? When building a microphone preamp, where in the circuit do you put the gain potentiometer? A sphere's radius is increasing at 2m/s @ time 5s what is its surface area.?