Question

What is the Cos of S

Answer 1

Answer:

4:5

Step-by-step explanation:

Cos ∅ is a trigonometrical ratio between base and hypotenuse.

• Here,base refers to the side on which theta resides.
• Hypotenuse is the side opposite to 90°

Clearly if we consider theta as S, then S resides on RS,and the side opposite to 90° is DS.

So,

• RS = 12 = base
• DS = 15 = hypotenuse

Hence

• cos∅ = RS/DS = 12/15= 4/5 = 4:5

Answer 2

Answer:

Cosθ = 12/15, θ = 36.9°

Step-by-step explanation:

SOH CAH TOA

Cosθ = $\frac{Adj}{Hyp}$

Cosθ =$\frac{12}{15}$

θ= Arccos(12/15)

θ=36.9°