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nikdorinn [45]
4 years ago
14

WILL GIVE A BRAINLEST TO RIGHT ANSWER

Mathematics
2 answers:
ExtremeBDS [4]4 years ago
7 0

we know that

In the right triangle ABC

∠CAB=∠ABC=45\°

so

AC=CB

we have

AB=9\ units

<u>using sines</u>

 sin(45\°)=\frac{BC}{AB}  or  sin(45\°)=\frac{AC}{AB}

substitute the value of AB

sin(45\°)=\frac{BC}{9}  or  sin(45\°)=\frac{AC}{9}

<u>using cosines</u>

cos(45\°)=\frac{AC}{AB}  or  cos(45\°)=\frac{BC}{AB}

substitute the value of AB

cos(45\°)=\frac{AC}{9}  or  cos(45\°)=\frac{BC}{9}

therefore

<u>the answer is</u>

sin(45\°)=\frac{BC}{9}

cos(45\°)=\frac{BC}{9}





uysha [10]4 years ago
6 0

Answer:

sin(45)=BC/9     then    cos(45)=BC/9

Step-by-step explanation:

A and E on Edgenuity

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Answer:

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