Question

class 10th

Trigonometry​

Answer 1

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Answer 2

Given:-

Here, we have

️ABC a right angled triangle

Right - angled at B

AB = 24cm

BC = 7cm

To Find :-

(i)sin A

(ii)cos A

Solution :-

In ️ABC ,By Pythagoras theorem

AC² = AB² + BC²

AC² = 24² + 7²

AC² = 576 + 49

AC² = 625

AC = 25

Here, we have hypotenuse (AC) = 25

Therefore,

sin A = P/H = 7/25

cos A = B/H = 24/25