To evaluate:cos(π/3)We know that the value of π=180^0⇒cos(π/3) =cos(180^0/3) =cos60^0 =1/2 ...

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Standard XII

Mathematics

Relation between Inverses of Trigonometric Functions and Their Reciprocal Functions

Evaluate: cos...

Question

Evaluate: $\cos (\frac{π}{3})$

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Solution

To evaluate: $\cos (\frac{π}{3})$
We know that the value of $π = 180^{0}$
⇒ $\cos (\frac{π}{3})$ $= \cos (\frac{180^{0}}{3})$
$= \cos 60^{0}$
$= \frac{1}{2}$ $(\cos 60^{0} = \frac{1}{2})$
Thus, $\cos (\frac{π}{3})$ $= \frac{1}{2}$ Answer

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Evaluate: cos(π3)

To evaluate:cos(π3)We know that the value of π=1800⇒cos(π3) =cos(18003) =cos600 =12 (cos600=12)Thus, cos(π3)=12 Answer

Evaluate: $\cos (\frac{π}{3})$

To evaluate: $\cos (\frac{π}{3})$
We know that the value of $π = 180^{0}$
⇒ $\cos (\frac{π}{3})$ $= \cos (\frac{180^{0}}{3})$
$= \cos 60^{0}$
$= \frac{1}{2}$ $(\cos 60^{0} = \frac{1}{2})$
Thus, $\cos (\frac{π}{3})$ $= \frac{1}{2}$ Answer