How to find out the value of the lettered sides

Mathematics

2 answers:

Serggg [28]2 years ago

6 0

Answer:

Step-by-step explanation:

<u>First</u><u> </u><u>Question</u>

To find a we use sine

sin ∅ = opposite / hypotenuse

a is the opposite

12.8 is the hypotenuse

sin 46 = a / 12.8

a = 12.8 sin 46

<u>Sec</u><u>ond</u><u> question</u>

To find b we use cosine

cos∅ = adjacent / hypotenuse

b is the adjacent

16.8 is the hypotenuse

cos 59 = b / 16.8

b = 16.8 cos 59

Hope this helps you

umka2103 [35]2 years ago

3 0

Step-by-step explanation:

sin 46°= a/12.8

a = sin46° * 12.8 = 9.20

cos59°=b/16.8

b = cos59°*16.8 = 8.65

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Step-by-step explanation: