Find x
a) 21 √2
b)7
c)21 √2/2
d)21 √3/2

C

Step-by-step explanation:

Use the sine ratio in the left, right triangle to find the common side to both triangles and the exact values

sin60° = , cos45° = , thus

sin60° = = = ( cross- multiply )

2 × opp = 21 ( divide both sides by 2 )

opp =

Now consider the right triangle on the right, using the cosine ratio

cos45° = = = ( cross- multiply )

x = × = → C

answer: are you

step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.