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Expert: Robi Bhattacharjee - 12/19/2008


Question
I've been puzzling over a section of problems for a while and can't figure it out. The instruction are "Find the exact value in radians", and it has questions such as "Tan^-1(1)" and "Sec^-1(sqrt2)". I remember learning the radian circle and I remember learning inverses (like how the inverse of tangent is cotangent and the inverse of secant is cosine), but I can't figure out how to do it because I'm not sure how to figure it out in radians.

Answer
Hi Nicole,

Well, it seems to me that you may need to have a little extra help from your teacher after school. This is too broad a question for me to answer since you apparently are having a problem with the concept.




I hope this helps,
Robi

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Robi Bhattacharjee

Expertise

I can answer a variety of questions on mathematics. Questions on trigonometry, calculus(preferably single variable), algebra, geometry, and number theory will be answered. I cannot answer questions on abstract branches of mathematics such as group theory. I also cannot answer questions on statistics. In number theory, I can answer questions on congruences, prime numbers, units, functions, and the riemann-zeta function.

Experience

I have studied advanced math my entire life. I started calculus in sixth grade. I have attended numerous math competitions and I am attending math organizations such as the San-Diego math circle. Also, this year I have been invited to the USAMO which is a prestigious math competition (Every year the USAMO invites 500 students from across the USA to participate in this competition. The top 6 go to represent the USA in the International Math Olympiad).

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I am in the San Diego Math Circle

Education/Credentials
I am entering high school and have received a perfect score and the STAR test 5 times in a row. I also have gotten recognitions in the AMC 10, AIME, Math Counts, and ARML. Additionally, I have won the San Diego Math Olimpiad twice in a row.

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