Anonymous
Anonymous asked in Science & MathematicsMathematics · 6 months ago

# State the exact values of the three primary trigonometric ratios for 150°?

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• TomV
Lv 7
6 months ago

Reference angle for 150° is 30°

sin(150°) = sin(30°) = 1/2

cos(150°) = -cos(30°) = -√3/2

tan(150°) = -tan(30°) = -√3/3

• Como
Lv 7
6 months ago

--

sin 150° = sin 30° = 1/2

cos 150° = - cos 30° = - √3/2

tan 150° = - tan 30° = - 1/√3

• J
Lv 7
6 months ago

State the exact values of the three primary trigonometric ratios for 150°?

$\sin 150° = \sin 30° = \frac{1}{2}$

$\cos 150° = - \cos 30° = -\frac{\sqrt{3}{2}$

$\tan 150° = - \tan 30° = -\frac{1}{\sqrt{3}}$

• J
Lv 7
6 months agoReport

sorry about the latex, thought I was on quora

• Lôn
Lv 7
6 months ago

Sin 150 = 0.5

Cos 150 = - 0.8660

Tan 150 = -0.5774

• Lôn
Lv 7
6 months agoReport

There is no point giving an answer to around 12 decimal places. 4 dps is the usual accepted accuracy.