Answer:
It's a isosceles triangle, i am not saying its clearly implied in the diagram with the red lines.... Which state that both the sides have same length
Hence if on ne side makes 55 with the base therefore the side with same length will make 55 with the base too
Hence its
55+55+x=180
X= 180-55-55
X= 70 degree
Therefore x is 70 degree
Convert everything to sine and cosine.
X -14 +14={3+14}
×=17
answer is 17 .
The zeros of the function occur when the graph meet the x-axis so in this case the zeros occur at B ( 0 and 5)
