Type the correct answer in the box.

in this triangle, =

Hence, the value of is 1.

Step-by-step explanation:

Since we have given that

ABC is a right angled triangle.

We need to find the value of

As we know the formula for "Cosine Rule ":

similarly,

So,

Hence, the value is 1.

Plato users the answer is 1

Step-by-step explanation:

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.