Question

In right angle triangle ABC, 8 cm, 15 cm and 17 cm are the lengths of AB, BC and CA respectively. Then, find out sin A, cos A and tan A.
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Answer 1

$in \: \triangle \: abc : -$

AB = 8CM

BC=15CM

CA=17CM

Now ,

Since, Hypotenuse is the longest side of a triangle,

Therefore, AC is the Hypotenuse.

Angle B = 90 degrees

From the perspective of Angle A

BC = perpendicular

AB = Base

We already know that :-

$\sin\theta \: = \frac{p}{h} = \frac{bc}{ac} \\ \\ \\ \cos\theta \: = \frac{b}{h} = \frac{ab}{ac} \\ \\ \\ \tan\theta \: = \frac{p}{b} = \frac{bc}{ab}$

So,

After putting down the Values we get the following:-

sinA = 15/17

cosA = 8/17

tanA = 15/8