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Sum of n Terms

In tri. ABC...

Question

In tri. $A B C$ , right angled at $B, A B = 24 c m, B C = 7 c m$ . Determine
(1) $sin A, cos A$
(2) $sin C, cos C$

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Solution

By Pythagoras theorem:

(1) $sin A$ = $\frac{7}{25}$ , $cos A$ = $\frac{24}{25}$

(2) $sin C$ = $\frac{24}{25}$ , $cos C$ = $\frac{7}{25}$

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