Question

9. The range R of a projectile which starts with a velocity v at an elevation a is given R = (v² sin 2a)/ g.Find the percentage of error in R due to an error of 1% in v and 0.5 % in a when a = π/3.​

Answer 1

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Refer to the attachment

Step-by-step explanation:

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Answer 2

Answer:

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Two vectors having equal magnitudes A make an angle theta with eahc other. Find the magnitude and direction of the resultant.

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$\sf{1. \; 2Acos \dfrac{\theta}{2}}$

$\sf{2. \; \dfrac{\theta}{2}}$

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Please explain it step-by-step and please explain the trigonometry part in detail and mention the trigonometric identities that you have used in solving.