Answer:
In a right angled triangle, the sine of an angle is: The length of the side opposite the angle divided by the length of the hypotenuse.
The abbreviation is sin. sin θ = opposite / hypotenuse.2 cosA sinB = sin(A + B) − sin(A − B) 2 cosA cosB = cos(A + B) + cos(A − B) 2 sinA sinB = cos(A − B) − cos(A + B)
Step-by-step explanation:
hi sushant
for another definition:-
Shina (word), or Sina (Japanese: 支那) means archaic Japanese word for China.
