Anonymous
Anonymous asked in Science & MathematicsMathematics · 6 months ago

16. Solve the right ∆ by providing all EXACT missing angles and sides text when: β = 17degrees and c=10?

(a) EXACT value of b=

(b) EXACT value of a=

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  • ?
    Lv 7
    6 months ago

    you have a right triangle

    alpha + beta = 90°

    Apply definitions of trig functions

    sin(beta) = b/c

    cos(beta) = a/c

    a = c cos(beta)

    b = c sin(beta)

    gamma = 90°

    beta = 17°

    alpha = 73°

    c = 10

    b = 10 sin(17°) = 10 cos(73°)

    a = 10 cos(17°) = 10 sin(73°)

    17° and 73° are not special angles so you are done

  • Anonymous
    6 months ago

    Enough with the anonymous questions. Show your face and then you might get more help.

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