Acohort study of red tide exposure and asthma compared exposed beach dwellers with non-exposed residents of the same community over a 30 year period. researchers found that the incidence of asthma among exposed residents was 73.5 per 1000. the incidence of asthma in non-exposed residents was 22.8 per 1000. calculate the relative risk and attributable risk of exposure to red tide and the development of asthma.

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

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step-by-step explanation: