Answer:
4 is a factor of 20.
Step-by-step explanation:
Answer:
87.5$ since 25% is 1/4 87.5 is 1/4
Step-by-step explanation:
Answer:
<h3>∴∠B=30°</h3>
Step-by-step explanation:
Complementary:
Two angles is said to complementary when the sum of two angles is 90 degree.
Given that,
∠A and ∠B are complementary.
Then, ∠A + ∠B = 90°
Cos A = 0.5
Since
∠A + ∠B = 90°
⇒ 60°+ ∠B = 90° [ plug ∠A= 60°]
⇒∠B=90°-60°
⇒∠B=30°
<h3>∴∠B=30°</h3>
Hello :
note : the polar coordinates is : (r , <span>θ)
</span>Another representation is (x, y) : x=r cos(θ) and y = sin(θ) and : r =<span>√(x²+y²)
</span>in this exercice : r = 1 and θ = 5<span>π<span>/6
so : x= 1.cos(</span></span>5π/6) and y = 1. sin(5π/6)
but : cos(5π/6) = cos (π - π/6) = - cos(<span>π<span>/6 ) = (- </span></span><span>√3)/2
</span>sin(5π/6) = sin (π - π/6) = sin(π/6 ) =1/2
Another representation is : ( (- √3)/2 , 1/2)