Question $1$

a$.$ Find $T_{\text{d}\text{r}\text{y}}$ when

$=50\%,=0\mathrm{.}010$

b$.$ Find $$ and $T_{\text{d}\text{r}\text{y}}$ when

$T_{\text{w}\text{e}\text{t}}=15C,=50\%$

c$.$ Find $$ and $$ when

$T_{\text{d}\text{r}\text{y}}=25C,T_{\text{w}\text{e}\text{t}}=21C$