Question

Its number 7 and its pretty easy can someone help kinda lost

Answer 1

7.8 cm

Explanation:

Tan ( 1R) = opposite leg / adjacent leg = QR / 5

5 tan (1R) = QR = 7.787 cm =~ 7.8 cm

(Remember : there are 2pi R = 360 degrees

so 1R = 360 / (2pi) degrees

tan ( 360/2pi) = tan 57.296 ° = 1.5574 )