Pythagorean theorem is

and using that sin is opposite/hypotenuse, you can find the third side of the triangle.

now you know adjacent is 60, so cos=60/61
If x is the number of students on the field trip:
60 + 15x + 95 + 12x
Answer:
Step-by-step explanation:
Since this is a right angled triangle:
tan(∅) = opposite side/adjacent side
In this triangle:
tan(25°) = x/19
x = 8. 86 ≅ 8.9
(x-1)^2=9 <=> x-1=3 <=> x=4
Answer:
< PQR = 61°
Step-by-step explanation:
Hope this helps:)