S=12(20) What is S if you multiply 12x20?

240

Work: You set up 12x20 vertically to do it easily. Since 0 times 2 and 0 times 1 is 0, the first line is 00. Then, for the second line, you add another 0, and you do 2 x 2 and 2 x 1, and you get 240. So, S = 240

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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