In Exercises 3 and 4, state the form of the Law of Sines used to solve the problem. Give the answer in a form such as sin 72° sin 55° 6.3 3. a) Find B if it is known that a = 5, b = 8, and a = 40°. a b) Find c if it is known that a = 5.3, a = 41°. and y = 87° b

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A: From the trigonometric table: cot(90∘)=0 If 0<θ<90∘, then tan(90∘-θ)=cot θ

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A: Given,           In the right triangle ABC, the length of side a=5 and the length of side b=3.

Q: 9. 5. 6. 49° 11 C = ? 52 C 40° 14 A A

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A: cos2α=1-sin2α sinα+β=sinαcosβ+cosαsinβ

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A: Given A=54° , a=24 , c=28Apply sine law sin Aa = sin Bb= sin cc

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