1.

From the figure, determine the value of s

A. S = D tanα1 – b tanα2 – D tanα2
B. S = D tanα2 – b tanα2 – D tanα2
C. S = D tanα1 – b tanα1 – D tanα2
D. S = D tanα1 – b tanα2 – D tanα1
Answer» B.


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