Use B $=$

$450$p$3$ V

$1+3$sin$\}$ Am and tan; $=2$ tan$2$m to predict the $($a$)$ magnitude and $($b$)$ inclination of Earth's magnetic field at the

geomagnetic equator, the $($c$)$ magnitude and $($d$)$ inclination at geomagnetic latitude $40\mathrm{.}0,$ and the $($e$)$ magnitude and $($f$)$ inclination at the north geomagnetic pole.

$($a$)$ Number

Units

$($b$)$ Number

Units

$($c$)$ Number

i

Units

$($d$)$ Number

Units

$($e$)$ Number

Units

$$

$($f$)$ Number

i

Units