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The range of a projectile fired at an angle with the horizontal and with an...

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Algebra

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The range of a projectile fired at an angle with the horizontal and with an initial velocity of v? feet per second isr =? ??v? sin(2?)where r is the horizontal distance (in feet) the projectile travels. An athlete throws a javelin at 75 feet per second. At what angle must the athlete throw the javelin so that the javelin travels 115 feet? (Assume 0< 45. Round your answer to two decimal places.)

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