Everything in Trigonometry
most popular Trigonometry questions
I need 2 methods,at least, for solving this expression: sin 15 + sin 75!2 Answers
One is to just calculate the sin of each - you might need to use the formulas for half angle (15 degrees is half of 30, sin30= .5) Another is to note that the sin 75 = cos 15 (since 15 = 90-... read more
Who invented trigonometry and how could they justify it?1 Answer
"Development of Trigonometry is not the work of any one man or nation. Its history spans thousands of years and has touched every major civilization. It first originated in India and the bas... read more
Schoolwork is not fun... when will I EVER use trigonometry in real life?4 Answers
Almost never unless you choice a profession that uses a lot of math. read more
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