In a quadrilateral PQRS, PQ = 3 cm, QR = 4 cm and PS = 5 cm. Also, ∠SPQ = 70∘ and ∠PQR = 90∘. Which of the following options is the approximate value of ∠QRS?

In a quadrilateral PQRS, PQ = 3 cm, QR = 4 cm and PS = 5 cm. Also, ∠

1.	In a quadrilateral PQRS, PQ = 3 cm, QR = 4 cm and PS = 5 cm. Also, ∠SPQ = 70∘ and ∠PQR = 90∘. Which of the following options is the approximate value of ∠QRS?
Answer» In a quadrilateral PQRS, PQ = 3 cm, QR = 4 cm and PS = 5 cm. Also, $∠$ SPQ = $70^{\circ}$ and $∠$ PQR = $90^{\circ}$ . Which of the following options is the approximate value of $∠$ QRS?