Question

find this answer pls​

Answer 1

Sin A = 4

5

We know,

Sin = Perpendicular = 4

Hypotenuse 5

Now,

According to Pythagoras Theorem

(Hypotenuse)² = (Perpendicular)²+(Base)²

=> (Base)² = (Hypotenuse)² - (Perpendicular)²

=> (Base)² = (5)² - (4)²

=> (Base)² = 25 - 16

=> (Base)²= 9

=> Base = 3 units

Now,

Cos A = Base = 3

Perpendicular 5

Tan A = Perpendicular = 4

Base 3

According to the problem

SinA - CosA

TanA

= 4 - 3

5 5

4

3

= 4-3

5

4

3

=1

5

4

3

=1 × 3

5 4

=3 (Ans)

20

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