A-Math - Trigonometry - Solving Trigonometric Equations (2)

A-Math - Trigonometry - Solving Trigonometric Equations (2)

Topic: Trigonometry

Tan x is negative in the second and fourth quadrant and positive
in the first and third quadrant. In the example above , tan x = - 1/2,
when you calculate the basic angle, do not insert the - sign into the
calculator i.e. tan ^-1 (-1/2), otherwise you will end up with a negative
 basic angle and this will mess up answers.The '-' sign is use
 to locate the quadrants

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About Unknown

I created this Blog after my students told me that there is very little information about how to solve GCE O Level Math and Additional Math (A-Math) questions on the internet. Even if they manage to find, the solution were for very basic questions. I am a Full-time Math Tutor in Singapore. I tutor mainly in Northern Singapore (Woodlands, Chua Chu Kang, Bukit Panjang, Yishun and Sembawang). I also tutor in Johor Bahru.