Question

Find the value for the side marked below.
Round your answer to the nearest tenth.
61°
135
y
y = = [?]

Answer 1

Answer:

$65.4$

Step-by-step explanation:

In any right triangle, the cosine of an angle is equal to its adjacent side divided by the hypotenuse, or longest side, of the triangle.

Therefore, we have:

$\cos 61^{\circ}=\frac{y}{135},\\t=135\cos 61^{\circ}=65.4492987333\approx \boxed{65.4}$