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

Question

(a) EXACT value of b=

(b) EXACT value of a=

Answer 1

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

Answer 2

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