Question

sin 90degrre is proved

Answer 1

Consider a right angled triangle with angles x, y, 90° .

We know that, sinΦ = opposite side to Φ / hypotenuse .

So, Consider sin90 , we know that hypotenuse is the opposite to 90°

By the definition , sin90=opposite to 90/hypotenuse

Which reduces sin90= hypotenuse / hypotenuse

sin90=1

Hence, we proved that sin90=1