Answer:
13
Step-by-step explanation:
If he read 9 books in january and read 4 more in july than he did in january then he read 13 books in july.
Answer:
where image?
Step-by-step explanation:
Answer:
from the working in the photo
Answer:
Option 2: 
Step-by-step explanation:
Given:
From the triangle shown below;
A triangle QRS with angle QRS = 90°, ∠QSR = 30°.
Side QR = 5, SQ = 10 and RS = 5√3
Now, we know from trigonometric ratio that,

Here, opposite side of angle QSR is QR and Hypotenuse is the side opposite angle QRS which is SQ. Therefore,

Therefore, the value of sine of 30° is one-half. So, second option is correct.