2007-11-26 22:37:12 · 17 answers · asked by hidro_ap 1 in Science & Mathematics ➔ Mathematics
Use θ as angle:-
cos ² θ + sin ² θ = x²/r² + y²/r²
cos ² θ + sin ² θ = (x² + y²) / r²
cos ² θ + sin ² θ = r² / r²
cos ² θ + sin ² θ = 1
2007-11-27 02:59:28 · answer #1 · answered by Como 7 · 3⤊ 1⤋
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2007-11-27 06:46:02 · answer #2 · answered by Anonymous · 0⤊ 1⤋
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2007-11-27 06:40:22 · answer #3 · answered by slimshadyroxxx 2 · 1⤊ 1⤋
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2007-11-27 06:39:29 · answer #4 · answered by Anonymous · 1⤊ 1⤋
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2007-11-27 06:39:17 · answer #5 · answered by KVC 3 · 1⤊ 1⤋
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2007-11-27 06:39:11 · answer #6 · answered by someone else 7 · 1⤊ 2⤋
Cos²x + sin²x = 1
2007-11-27 06:44:09 · answer #7 · answered by CPUcate 6 · 1⤊ 2⤋
cos²x + sin²x = 1
2007-11-27 08:28:26 · answer #8 · answered by imieazmi 2 · 0⤊ 1⤋
1 + 1 - 1 + 1 - 1 + 1 - 1 + 1 - 1 + 1 - 1 + 1 - 1 + 1 - 1 = 1
2007-11-27 06:43:29 · answer #9 · answered by picaresque_82 2 · 0⤊ 2⤋
cos ^2 + sin^2 is equal to 1 that is number 1 dont belive me ok the general equation of a circle is x^2 +y^2 = 1 since sin is the x value and cos is the y value therefore your statment is equal to 1 .. :-)
2007-11-27 06:40:25 · answer #10 · answered by Anonymous · 1⤊ 1⤋
We know that, in right triangle,
Cos x = base/hypotenuse = b/h
& Sin x = perpendicular/hypotenuse = p/h
So,
Cos²x + sin²x
= (b/h)² + (p/h)²
= b²/h² + p²/h²
= (b²+p²)/h²
= h²/h² (b²+p² = h² by Pythagoras Theorem)
= 1
2007-11-27 06:45:28 · answer #11 · answered by sulinderkumarsharma 2 · 1⤊ 0⤋