The vertical component of the earth's magnetic field is $6\times {10}^{-5} \mathrm{T}$ at any place where the angle of dip is $37°$. The earth's resultant magnetic field at that place will be (Given $\tan 37°=\frac{3}{4}$)

• A

  $8\times {10}^{-5} \mathrm{T}$
• B

  $6\times {10}^{-5} \mathrm{T}$
• C

  $5\times {10}^{-4} \mathrm{T}$
• Correct answer
  D

  $1\times {10}^{-4} \mathrm{T}$

Hence, the correct answer is option: 'D'.