Question

$\huge \fbox \red{❥ Question}$


Determine:
(i) sin A, cos A
(ii) sin C, cos C


✳️gud luck:-|​

Answer 1

In Δ ABC, right-angled at B ,using Pythagoras theorem we have

AC² = AB² +BC² = 576 + 49 = 625

Or AC=25 ( taking positive value only)

Now

(i) In a right angle triangle ABC where B=90° ,

Sin A = BC/AC = 7/25

CosA = AB/AC = 24/25

(ii) Sin C = AB/AC = 24/25

Cos C = BC/AC =7/25