Answer:
2 units
Step-by-step explanation:
We are given that
Angle ,
radian
Length of an arc=
We have to find the radius of circle in simples form.
We know that
Where l=Length of arc
r=Radius of circle
Using the formula
units
Hence, the radius of the circle=2 units
B is the answerr okkkkkkk
Answer:
5 cm
Step-by-step explanation:
32 / 4 = 8
40 / 8 = x
40 / 8 = 5
32 and 4 are corresponding, and 40 and x are as well. Find the relation between 32 and 4, then apply it to 40 to find the value of x.
4(5x + 12) simplified = 20x + 48
Answer:
To find cosθ, use the formula for the area of a triangle i.e. AREA=1/2 x a x b x sinC.=> For this case: 15= 1/2 x 10 x 5 x sinC to find sinC.=> SinC = 3/5 thus, Arcsin(3/5)=+- 4/5 or +-0.8
To find the exact length of BC, use the cosine rule.=> c(sq)=a(sq)+b(sq)-2abCosC=> c(sq)=10(sq)+5(sq)-2(10)(5)(+-4/5)=> c(sq)= Square root of 205
