Question

abc is a right triangle,right angled at c . if A =30° and ab = 40 units, find the remaining tow sides and ∆b of ∆ abc

Answer 1

Answer:

Step-by-step explanation:

Using Sin 30 = 1/2

sin 30 = perpendicular/ hypotenuse

perpendicular= let it be x cm

hypotenuse = 40 cm

1/2 = x/40

x= 20 cm

Now using Cos 30 =( 3^1/2)/2

cos 30 = base / hypotenuse

let it be base be y cm

hypotenuse = 40 cm

(3^1/2) / 2 = y/40

y = 20× 3^1/2

so sides are 40 cm , 20 cm , 20*3^1/2

Angle B = 60 degree

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Answer 2

hope this answer will help you.