Find the value of sin15°
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Sin15 is equal to 0.65028784
ecetpreparation:
yaar dont needed the calculator values,,
he needed in by form :---root 3-1/2root2
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Hey !!!
I am going to use simple trick for finding the value of sin15° I have two method but simple one. ..
sin(45° - 30° ) = sin15° ( we can write )
you know sin(A-B) = sinA ×cosB -. cosA×sinB use it .
sin45° × ×cos30° - cos45° ×sin30°
1/√2 × √3/2 - 1/√2 × 1/2
=> √3/2√2 - 1/2√2
=> √3- 1 /2√2 Answer
Hope it helps you !!!
@Rajukumar111
I am going to use simple trick for finding the value of sin15° I have two method but simple one. ..
sin(45° - 30° ) = sin15° ( we can write )
you know sin(A-B) = sinA ×cosB -. cosA×sinB use it .
sin45° × ×cos30° - cos45° ×sin30°
1/√2 × √3/2 - 1/√2 × 1/2
=> √3/2√2 - 1/2√2
=> √3- 1 /2√2 Answer
Hope it helps you !!!
@Rajukumar111
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