The angle between two vector of magnitude 12 and 18 units when t

1.	The angle between two vector of magnitude 12 and 18 units when the resultant is 24 unitsA) 63 degree 57 minB) 75degree 52 degreeC) 82 degree 3minD) 89degree 16minIs there is way to find the uncommon degrees in maths or it is only possible by using calculatator ????
Answer» Correct option is (B) 75.52 degree Explanation: As we know that R² = A² + B² + 2ABcos(θ) 24² = 12² + 18² + 21218cos(θ) 6²(4²) =6² (2² + 3² + 223cos(θ)) Cos θ = 3/12 = 0.25 we can only tick the value by graph of cosθ if there is greater difference of angle in options otherwise use calculator. θ = 75.52 degree.

The angle between two vector of magnitude 12 and 18 units when the resultant is 24 unitsA) 63 degree 57 minB) 75degree 52 degreeC) 82 degree 3minD) 89degree 16minIs there is way to find the uncommon degrees in maths or it is only possible by using calculatator ????

Answer»

Correct option is (B) 75.52 degree

Explanation:

As we know that
R² = A² + B² + 2ABcos(θ)
24² = 12² + 18² + 2*12*18cos(θ)
6²(4²) =6² (2² + 3² + 2*2*3cos(θ))
Cos θ = 3/12 = 0.25
we can only tick the value by graph of cosθ if there is greater difference of angle in options otherwise use calculator.

θ = 75.52 degree.

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The angle between two vector of magnitude 12 and 18 units when the resultant is 24 unitsA) 63 degree 57 minB) 75degree 52 degreeC) 82 degree 3minD) 89degree 16minIs there is way to find the uncommon degrees in maths or it is only possible by using calculatator ????

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