please solve this......
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Solution
In Δ ABC, right-angled at B
using Pythagoras theorem
we have
AC² = AB² +BC²
AC² = 24² + 7²
AC²576 + 49
AC²= 625
AC = √625
AC = 25
Now
In a right angle triangle ABC where B=90°
(i) Sin A = BC/AC = 7/25
CosA = AB/AC = 24/25
(ii) Sin C = AB/AC = 24/25
Cos C = BC/AC =7/25
Sin. C cos C
(ii) sinC=
AC
AB
=
25
24
;cosC=
AC
BC
7/ 25
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