Using Figure 1, complete the following function. sin θ=
A. u/r
B. v/r
C. u/v
D. r/v
E. v/u
F. r/u

Given:

A figure of right triangle with terminal angle , base u, perpendicular v and hypotenuse r.

To find:

The value of .

Solution:

In a right angle triangle,

Substituting Perpendicular = v and hypotenuse = r in the above formula, we get

The value of is .

Therefore, the correct option is B.

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'.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^