Mrs. Jones decided to buy some pencils for her class. She bought 2 packages of pencils, and each package contained 42 pencils. T
1 answer:
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Answer:
0.51 cm
Step-by-step explanation:
In right triangle MNP, MP = 4 cm, m∠N = 90°, m∠P = 21°
By the sine definition,
Now, consider right triangle HMN (it is right because NH is an altitude). By the cosine definition,
In the right triangle, two acute angles are always complementary, so
Thus,