Question Number 207779 by Tawa11 last updated on 26/May/24
Answered by mr W last updated on 26/May/24
Commented by Tawa11 last updated on 26/May/24
$$\mathrm{Thanks}\:\mathrm{sir}. \\ $$$$\mathrm{I}\:\mathrm{understand}\:\mathrm{the}\:\mathrm{workings}\:\mathrm{now}. \\ $$$$\mathrm{I}\:\mathrm{appreciate}\:\mathrm{sir}. \\ $$
Commented by mr W last updated on 26/May/24
$$\mathrm{30}{m},\:\mathrm{30}°,\:\mathrm{25}°\: \\ $$$${you}\:{need}\:{all}\:{these}\:{three}\:{infos}\:{to} \\ $$$${find}\:{h}\:{and}\:{d}. \\ $$
Commented by mr W last updated on 26/May/24
$${d}=\frac{{h}}{\mathrm{tan}\:\mathrm{30}°}=\frac{\mathrm{30}−{h}}{\mathrm{tan}\:\mathrm{25}°} \\ $$$$\Rightarrow{h}=\frac{\mathrm{30}\:\mathrm{tan}\:\mathrm{30}°}{\mathrm{tan}\:\mathrm{30}°+\mathrm{tan}\:\mathrm{25}°}=\mathrm{16}.\mathrm{7}\:{m} \\ $$$$\Rightarrow{d}=\mathrm{28}.\mathrm{7}\:{m} \\ $$
Commented by Tawa11 last updated on 26/May/24
$$\mathrm{Thanks}\:\mathrm{sir}. \\ $$