Part
Now, raise one of your hands just slightly and press both hands together again. This motion models a thick plate
pressing against a thin one. What happens? How does this model further explain plate movement?

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

cultural achievements of the 1920's 2010  

1. cultural achievements and african american achievements in the 1920’s  

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