Prove that I2=H2+V2 and tanq=VH; where for terrestrial magnetism θ angle of dip, H horizontal component and vertical component.
Open in App
Solution
Let I be the total intensity of earth field, θθ angle of dip horizontal intensity H, vertical intensity As per figure, Resolving I in two ⊥⊥ directions, we get Horizontal component H = I cos θθ .......... (i) Vertical component V = I sin θθ ......... (ii) (ii) ÷÷ (i) VH=IsinθIcosθ tanθ=VH Also by squaring and adding equations (1) and (2),