When I was in middle school, I had a classmate who would look at trigonometric functions and yell, "I will never need these!" ...
Abstract: Nowadays, problems such as greenhouse effect and air pollution become increasingly prominent. The power generation process should pay attention to the fuel cost and reduce the pollution to ...
Brain Station Advanced on MSNOpinion
Solve it without trigonometry — 2 easy methods anyone can use
Struggling with a problem that seems to require trigonometry? This lesson shows how to solve it without using trigonometry, ...
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