Where's My Trigonometry Table?

Geometry Level 2

sin ⁡ 6 0 ∘ = sin ⁡ 60 0 ∘ cos ⁡ 6 0 ∘ = cos ⁡ 60 0 ∘ tan ⁡ 6 0 ∘ = tan ⁡ 60 0 ∘ \sin 60^\circ = \sin 600^\circ \\ \cos 60^\circ = \cos 600^\circ \\ \tan 60^\circ = \tan 600^\circ

How many of the equations above is/are true?

0 1 2 3

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Pi Han Goh by Pi Han Goh , 30, Malaysia

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1 solution

Vaibhav Prasad
Jun 2, 2016

Relevant wiki: Trigonometric Graphs - Amplitude and Periodicity

600 ° 600° lies in the Third Quadrant.

Only t a n g e n t tangent function is positive in the Third Quadrant.

Hence only one equation is correct.

3 Helpful 0 Interesting 0 Brilliant 0 Confused

You are mistaken!It should be only tan

Deepak Kumar - 5 years ago

Tan is also correct by the way...

Adrian Pen - 5 years ago

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