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Fofino [41]
1 year ago
5

The second part of the problem is where i need help. The answers i have there have been given by other tutors

Mathematics
1 answer:
tino4ka555 [31]1 year ago
3 0

SOLUTION

From the given value

Since

\sin u=\frac{7}{25}

Then using trigonometrical ratios it follows

\cos u=\frac{24}{25}

Using hal -ngle it folows

\begin{gathered} sin(\frac{u}{2})=\sqrt{\frac{1-\frac{24}{25}}{2}} \\ s\imaginaryI n(\frac{u}{2})=\sqrt{\frac{1}{50}} \end{gathered}

Also

\begin{gathered} cos(\frac{u}{2})=\pm\sqrt{\frac{1+\frac{24}{25}}{2}} \\ cos(\frac{u}{2})=\sqrt{\frac{49}{50}} \\ cos(\frac{u}{2})=7\sqrt{\frac{1}{50}} \end{gathered}

Finally?

\begin{gathered} \tan(\frac{u}{2})=\pm\sqrt{\frac{1-\frac{24}{25}}{1+\frac{24}{25}}} \\ \tan(\frac{u}{2})=\sqrt{\frac{1}{49}} \\ \tan(\frac{u}{2})=\frac{1}{7} \end{gathered}

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