The magnitude of an earthquake is calculated using the Richter Scale, M=log I/io , where I0 is the threshold intensity and the i
ntensity I is given in terms of multiples of that threshold intensity. Which is the correct expression to find the magnitude of an earthquake that had the intensity 980 times the threshold intensity?
1 answer:
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Answer:
sin^2α
Step-by-step explanation:
I will just pose x instead of alpha here to make things simpler
we know that sin^2x = 1 - cos^2x so...
we can rewrite using trigonometric identities (tan = sin/cos)...