Question

i n triangle abc angle b.is 90degree and angle a is 30 degree .side ac is 10cm.find the side bc.and ab

Answer 1

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 = 4 cm. Side AB = 5√3 cm.

Answer 2

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