Question

ПМС015 cm10 cmb30°Atan(309) =tan(30°) =tan(309) = 10tan(30%) = 10

Answer 1

for a right triangle we can use trigonometric ratios, this exercise wants we use tangent

`\tan (\alpha)=(O)/(A)`

where alpha is the reference angle, O the opposite side to the angle and A the adjacent side of the angle

Then using angle 30° like reference angle we replace

`\tan (30)=(5)/(b)`

because the opposite side from the 30°angle is 5cm and the adjacent side is b

Then right option is First