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Find the lengths of the missing sides if a is opposite angle A, side b is...

Find the lengths of the missing sides if a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse.

a) sin B=1/2, a=20

b) tan A=100, b=100

c) a=5, ∡ A= 60 degrees

Math   Precalculus   
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