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find the exact value of the trigonometric function.

0 votes

Use the figure to find the exact value of the trigonometric function.

sin 2α

multiple-angle-trigonometric-functions

asked Jan 22, 2015 in TRIGONOMETRY by anonymous

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1 Answer

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Step 1 :

Find the exact value of by using double-angle formula.

Double-angle formula : .

From the figure : .

Pythagorean theorem : .

Step 2 :

The trigonometric functions :

and .

The exact value of is .

Solution :

The exact value of is .

answered Jan 23, 2015 by lilly Expert

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