In this triangle, which of the following is true?

Option C. x = 55° and a = 11.47 is the correct option.

Step-by-step explanation:

As we know sum of all angles of a triangle = 180°

Therefore in the triangle given

35° + 90° + x = 180°

125° + x = 180°

x = 180° - 125° °°

x = 55°

Now we we find the sine of 35°

sin35° =

sin35°=

0.5736 =

a = 20×0.5736

a = 11.47 units

Therefore, option C. x = 55° and a = 11.47 is the correct option.

below

step-by-step explanation:

1. 5/1

2. 10/16

3. 90/2

4. 1/20

5. 3/1

6. 14/24

7. 1/4

8. 18/10