You have to explain how you knew to use 55 and 120, not another option.
Hope it helped! :)
Answer:
-2
Step-by-step explanation:
hope this helped!
Answer:
h = 1.403733341286
Step-by-step explanation:
17.
the triangle of sides ‘l’ and ‘l-h’ is a right angled triangle.
Then

Then

Then

18.
For l = 6 and θ = 40 :

= 6-6cos(40)
= 1.403733341286
Answer:
Yes
Step-by-step explanation:
-2(9)+4= -14 and -14 is equal to -14.
10,11,15 is not right triangle
30,40,50 is right triangle
9,13,16 is not right angel
16,30,34 is right triangle