Question

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In the figure given below find the value of sin theta and cos alpha.​​

Answer 1

Answer:

Both Are 5/13

Step-by-step explanation:

Given that ∠PQR = 90°

Therefore, according to pythagoras theorem,

PR² = PQ² + QR²

=> 13² = 12² + QR²

=> 169 = 144 + QR²

=> QR² = 169-144 = 25

=> QR = sqrt(25) = 5cm

Now, sinθ = opposite / hypotenuse = sinP = QR/PR = 5/13

Cosα = Adjacent / hypotenuse = QR / PR = 5/13

That also implies Cosα= 90-Sinθ

I hope u understand....