Question

What is the value of r?

Answer 1

using soh cah toa

opp=4

hyp=r

we are using soh

therefore sin45=4/r

rsin45=4

r=4/sin45

r=5.7 approx

Answer 2

= 5.657 units

Explanation:

Using the trigonometric ratio; sine

Sine Ф = opp/Hyp

Opposite = 4 and Hypotenuse and Ф=45°

Sine 45° = 4/r

r = 4/sine 45

= 5.657 units