Question

anyone please answer question number 3rd very hard

Answer 1

sin60° = perpendicular/hypotenuse
√3/2= p/h
√3/2= 4.5/h
h=9/√3 = 3√3 =5.19cm

sin30°=p/h
1/2=p/5.19
p=5.19/2=2.59 cm

so sides are 2.59cm, 5.19, 4.5cn

Answer 2

first here we have to draw base of 4.5cm then placing your protactor on left side and make angle of 30de and extend it. then place your protractor on right side and make an angle Of 90de and extend it. now measure with your scale and write down the values.