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malfutka [58]
3 years ago
12

Match each value with its formula for ABC.

Mathematics
2 answers:
Ivahew [28]3 years ago
5 0

For the triangle ABC use the sine theorem:

\dfrac{a}{\sin A}= \dfrac{b}{\sin B}= \dfrac{c}{\sin C}.

1. From \dfrac{a}{\sin A}= \dfrac{b}{\sin B} you have \dfrac{a}{b} \cdot \sin B=\sin A.

2. From \dfrac{b}{\sin B}= \dfrac{c}{\sin C} you have \dfrac{b}{c} \cdot \sin C=\sin B.

3. From \dfrac{a}{\sin A}= \dfrac{c}{\sin C} you have \dfrac{c}{a} \cdot \sin A=\sin C.

4. From \dfrac{a}{\sin A}= \dfrac{c}{\sin C} you have \dfrac{\sin A}{\sin C} \cdot c=a.

5. From \dfrac{a}{\sin A}= \dfrac{b}{\sin B} you have \dfrac{\sin B}{\sin A} \cdot a=b.

6. From \dfrac{b}{\sin B}= \dfrac{c}{\sin C} you have \dfrac{\sin C}{\sin B} \cdot b=c.

maw [93]3 years ago
5 0

Answer:

1. sin A

2. sin B

3. sin C

4. a

5. b

6. c

Step-by-step explanation:

According to the Law of sine

\frac{\sin A}{a}=\frac{\sin B}{b}=\frac{\sin C}{c}

1.

\frac{\sin A}{a}=\frac{\sin B}{b}

\sin A=\frac{a}{b}\times \sin B

The of first formula is sin A.

2.

\frac{\sin B}{b}=\frac{\sin C}{c}

\sin B=\frac{b}{c}\times \sin C

The of first formula is sin B.

3.

\frac{\sin A}{a}=\frac{\sin C}{c}

\frac{c}{a}\times \sin A=\sin C

The of first formula is sin C.

4.

\frac{\sin A}{a}=\frac{\sin C}{c}

\frac{\sin A}{\sin C}\times c=a

5.

\frac{\sin B}{b}=\frac{\sin A}{a}

\frac{\sin B}{\sin A}\times a=b

6.

\frac{\sin C}{c}=\frac{\sin B}{b}

\frac{\sin C}{\sin B}\times b=c

Therefore value of given formulas are sin A, sin B, sin C, a, b, c respectively.

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