Question

35 POINTS: TRIGONOMETRY

Find each side marked with a letter. All lengths are in centimetres.

please show the working since I know the answers.​

Answer 1

Find Y using the law of cosines:

cos(angle) = adjacent leg / hypotenuse

cos(20) = 11/y

y = 11/ cos(20)

y = 11.706 ( Round answer as needed)

Find X using the law of sines:

Sin(angle) = opposite leg / hypotenuse

Sin(35) = 11.706 / X

X = 11.706 / sin(35)

X = 20.4088 ( Round answer as needed)