Gwen has already read 130 pages of her 400-page summer reading book. If she reads at an average rate of 45 pages per hour, how l
2 answers:
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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,