Question

I need this question answered plz help.

Answer 1

a.12/13

Explanation:

• FORMULA: sine of an angle in a triangle is given by,
  `(opposite side's length)/(length of the hypotenuse)`

• here, in the given triangle PQR, for angle 'p'

opposite side= QR

adjacent side= PQ

hypotenuse=PR

• Therefore, sine of angle p=
  `(QR length)/(PR length)  = (12)/(13)`

• Thus, by using the above given formula, the sine of angle p in the triangle PQR is 12/13.

• hence, the trigonometric formulas as mentioned above should be remembered for sure to solve these type of problems