![\begin{gathered} \cos (45)=\frac{7}{h} \\ \Rightarrow h=\frac{7}{\cos(45)}=\frac{7}{\frac{1}{\sqrt[]{2}}}=7\cdot\sqrt[]{2} \\ h=7\cdot\sqrt[]{2} \end{gathered}](/tpl/images/2898/0155/917ab.png)
![\begin{gathered} h^2=7^2+x^2 \\ \Rightarrow x^2=h^2-7^2=(7\cdot\sqrt[]{2})^2-7^2=49\cdot2-49=49 \\ \Rightarrow x^2=49 \\ x=7 \end{gathered}](/tpl/images/2898/0155/2036f.png)
How do I know where which choices below go into the correct blanks for number 1-4?
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Mathematics, 24.01.2023 14:00 grey00
How do I know where which choices below go into the correct blanks for number 1-4?
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