cos squared theta + sin squared theta equal to
MaxCross:
they are equal to 1
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hellooooooo .........sinsquare theta + sin square theta equal to 1
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2
#AlexaRousey here!!
Question :
sin^2¢ + cos^2¢ =?
Draw a triangle ABC, right angled at B.
Suppose angle A be ¢.
Since sin¢ = BC/AC
& cos¢ = AB/AC
Put values ;
= (BC/AC) ^2 + (AB/AC) ^2
= (BC^2 + AB^2) / AC ^2
= AC^2 / AC^2
= 1
Hence sin^2¢ + cos^2¢ = 1.
Thanks!!
Question :
sin^2¢ + cos^2¢ =?
Draw a triangle ABC, right angled at B.
Suppose angle A be ¢.
Since sin¢ = BC/AC
& cos¢ = AB/AC
Put values ;
= (BC/AC) ^2 + (AB/AC) ^2
= (BC^2 + AB^2) / AC ^2
= AC^2 / AC^2
= 1
Hence sin^2¢ + cos^2¢ = 1.
Thanks!!
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