Question

find the value of ac in triangle abc when ab =3cm angle b=90degree
c=30degree ​

Answer 1

Answer:

abc is a right triangle

sin30=Ab/ac

1/2=3/ac

ac=2×3

ac=6

Answer 2

Answer

Angle B=90°

Angle A=30°

Angle C=60°__(remaining angle of triangle)

side opposite to 30° =1/2×hypotenuse

BC=1/2×AC

1/2×10

=5 cm

side opposite to 60° = √3/2×hypotenuse

AB =√3/2×AC

=√3/2 × 10

=5√3 was cm

Ans. side BC= 4cm. side AB =5√3 cm.