Answer:
x = 37
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
The angle 132° is an exterior angle of the triangle, thus
x + 95 = 132 ( subtract 95 from both sides )
x = 37
Taking Rhs
1/2 [sin(x+y)+ sin (x-y)]
using sinA + sin B = 2 cos (A+B)/2 cos( A - B)/2
1/2 [ 2 Cos ( x+y+x-y)/2 . Cos (x+y-x+y)/2]
=Cos 2x/2. Cos 2y/2 = Cos x . Cos y
Hence true
Answer:
A = pi/3 = 1.05°
Step-by-step explanation:
since brians shadow is 2/3rds his height
4 / 6 is 2 /3
20 / 30 is 2 / 3 too so flag pole must be 30 feet tall
