That's what the graph should look like and I wrote the rest on there just incase you needed any other information.
All the angles in a triangle add up to 180 degrees
40+90=130
180-130=50
The missing angle is 50 degrees
The value of .
Solution:
Given data:
To find the value of
Using trigonometric identity,
Substitute in the identity, we get
1 can be written as .
Do cross multiplication.
Denominators are same, so you can add the fractions.
Taking square root on both sides, we get
Option B is the correct answer.
Hence the value of .