Answer:
OK mate don't freak out its easy
First things first x and y are height and base and 10cm is hypotenuse.
40degree is the angle
Now.
The sin angle is an trigonometric angle which deals with height and hypotenuse.
It's formulae is...... Sin angle =height /hypotenuse
So sin 40 = x/10
X= 10 * sin 40
X= 10*0.64
Hence x=6.4 cm
Remainder sin 40 is 0.64
Again
The cos angle is an trigonometric angle which deals with base and hypotenuse
It's formulae is...... Cos angle =base /hypotenuse
So cos 40 = y/10
Y= cos 40 *10
Y= 0.76*10
Hence y = 7.6cm
Remainder cos 40 = 0.76.
Thank you