Someone pls answer this correctly pls ! IXL Geometry area between two shapes.
2 answers:
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Answer:
B
Step-by-step explanation:
Subtract 20 from both sides:
Divide both sides by -1:
Square both sides:
Subtract 9 by both sides:
Divide both sides by -8:
That means that either a or b is correct and since 9/8 is positive that means it needs to bee less than 9/8 so the correct answer is B
Answer:
tan(Sin^-1 x/2)=
Step-by-step explanation:
Let sin^-1 x/2= θ
then sinθ= x/2
on the basis of unit circle, we have a triangle with hypotenuse of length 1, one side of length x/2 and opposite angle of θ.
tan(Sin^-1 x/2) = tanθ
tanθ= sinθ/cosθ
as per trigonometric identities cosθ= √(1-sin^2θ)
tanθ= sinθ/ √(1-sin^2θ)
substituting the value sinθ=x/2 in the above equation
tanθ=
now substituting the value sin^-1 x/2= θ in above equation
tan(sin^-1 x/2) =
!