Why are trigonometric functions: cos 45 ° / - Tan 45 ° - Sin 30 ° = - √ 2 / 2 / - 1-1 / 2, = √ 2 / 3, | Math enthusiast | Mathematical art

Why are trigonometric functions: cos 45 ° / - Tan 45 ° - Sin 30 ° = - √ 2 / 2 / - 1-1 / 2, = √ 2 / 3,

Because cos 45 ° = √ 2 / 2;
tan45°=1
sin30°=1/2.
So (√ 2 / 2) / (- 1) - 0.5 = - √ 2 / 2-0.5 = √ 2 / 3, no minus sign

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