5) In the figure, triangle ABC is a right triangle at B. If CD = 15, find BC to the nearest tenth.

BC ≈ 4.0

Step-by-step explanation:

∠ DCA = 180° - 70° = 110° ( adjacent angles )

∠ DAC = 180° - (30 + 110)° ← sum of angles in triangle

∠ DAC = 180° - 140° = 40°

Using the Sine rule in Δ ACD to find common side AC

= ( cross- multiply )

AC × sin40° = 15 × sin30° ( divide both sides by sin40° )

AC = ≈ 11.668

Using the cosine ratio in right triangle ABC

cos70° = = = ( multiply both sides by 11.668 )

11.668 × cos70° = BC , then

BC ≈ 4.0 ( to the nearest tenth )

d 192

step-by-step explanation:

we find our area to find area we multiply thoses numbers to get our answer so our area is 192

whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation: