Given:
Right triangles:
To find:
The value of c and value of d
Solution:
In the first right triangle:
θ = 45°
Opposite side to θ = 5
Hypotenuse = c


The value of sin 45° =


Do cross multiplication, we get

In the second right triangle:
θ = 60°
Opposite side to θ = 4
Adjacent side to θ = d



Do cross multiplication, we get

The value of
and
.