Answer:
I think the answer is srry if I'm wrong but it's 22 or 42
Step-by-step explanation:
ur welcome srry if I got it wrong
sinx-✓(1-3sin2x)=0
-✓(1-3sin2x)=-sinx
apply squared both sides
(-✓(1-3sin2x)^2=(-sinx)^2
1-3sin2x=sin2x
collect like terms
-3sin2x-sin2x+1=0
-4sin2x+1=0
-4sin2x=-1
devide both sides by -4
sin2x=-1/-4
sin2x=0.25
sinx*sinx =0.25
[sinx]^2 = 0.25
apply square root both sides
<h2>✓(sinx)2 = ✓0.25</h2>
<h2>sinx=0.5</h2><h2> </h2><h2>x=sin^-(0.5)</h2>
<h2>x=30°</h2>
<h3>check quadrant where sin is positive, sin is +ve in second quandrant</h3>
180-x= Theta(X)
180-30=X
X=150°
therefore, all angles for sinx -✓(1-3sin2x)=0 are (X= 30° and 150°)
Answer:
63.25 ft
Step-by-step explanation:
area of a triangle = 1/2 base × height
area of a circle = pi × r^2
radius = half the diameter
therfore area of a semicircle would be 1/2 (pi × r^2)
triangle = 1/2 × 8 × 6 = 24 ft
half a circle = 1/2( pi × 5^2) = 39.25 ft
total are = triangle + 1/2 circle
total area = 24 + 39.25 = 63.25 ft
Mean of the data set is :
7.5