Given:
Right triangle with base 12 cm and height is x.
θ = 35°
To find:
The value of x.
Solution:
Base = Adjacent side = 12 cm
Height = Opposite side = x
Using basic trigonometric ratio formula:


The value of tan 35° = 0.7

Multiply by 12 on both sides.


The value of x is 8.4 cm.