Question

Que4...if sin theeta=3/5,find cos theeta​

Answer 1

Answer:

Step-by-step explanation:

cos theta=4/5

Answer 2

Answer:

Cos θ = $\frac{4}{5}$

Step-by-step explanation:

Given:

sin θ $=\frac{opposite}{hypotenuse}$

$opposite = 3 , hypotenuse = 5\\\\therefore ~the~ adjacent~ side~ is~ 4 ~(~pythagorean~ triplet~)$

Proof:

According to pythagorus theorem;

$s^2+s^2=H^2\\\\On~substituting ~the ~values~ we~ get:\\\\3^2+s^2=5^2\\\\s^2=25-9\\\\s^2=16\\\\s=\sqrt{16}\\\\s=4$

cos θ $=\frac{adjacent}{hypotenuse}$

Therefore cos θ = $\frac{4}{5}$

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