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Page 11: Where Two Sides are Known

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WHERE TWO SIDES ARE KNOWN

Now you try it!

THREE MORE IMPORTANT KEYS: sin-1 cos-1 tan-1

    IF TWO SIDES
    ARE KNOWN                 SOLVE        FORMULAS

    A & B                       D        tan-1(A ÷ B)
    A & C                       D        sin-1(A ÷ C)
    B & C                       D        cos-1(B ÷ C)
    A & B                       E        tan-1(B ÷ A)
    A & C                       E        cos-1(A ÷ C)
    B & C                       E        sin-1(B ÷ C)
(Round answer to nearest tenth place. 00.0)

1.  If B = 3.464 and C = 4.000 what is D = __________
2.  If B = 3.464 and A = 2.000 what is D = __________
3.  If A = 2.000 and C = 4.000 what is D = __________
4.  If B = 3.464 and C = 4.000 what is E = __________
5.  If B = 2.000 and A = 2.000 what is D = __________
6.  If A = 3.500 and B = 3.800 what is D = __________
7.  If A = 3.500 and B = 3.800 what is E = __________
Two Sides Known



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