At the same instant two boy throw balls A and B from the window with a speed `v_(0)` and `kv_(0)` respectively , where k is a constant . Show that the balls with collide if `K = cos theta _(2)// cos theta_(1)`.

At the same instant , two boys throw balls A and B from the positions shown with a speed v_0 and kv_0 respectively , where k is a constant. For what value of k , balls will collide ? Relevant data is available in the figure .

Show that: t a n(60^0+theta)t a n(60^0-theta)=(2cos2theta+1)/(2cos2theta-1)

Eliminate theta from the following equation : x=h+a cos theta, y=k + b sin theta

A ball is thrown from a point with a speed 'v^(0)' at an elevation angle of theta . From the same point and at the same instant , a person starts running with a constant speed ('v_(0)')/(2) to catch the ball . Will the person be able to catch the ball ? If yes, what should be the angle of projection theta ?

A ball is thrown from a point with a speed 'v^(0)' at an elevation angle of theta . From the same point and at the same instant , a person starts running with a constant speed ('v_(0)')/(2) to catch the ball . Will the person be able to catch the ball ? If yes, what should be the angle of projection theta ?

A ball is thrown from a point with a speed 'v^(0)' at an elevation angle of theta . From the same point and at the same instant , a person starts running with a constant speed ('v_(0)')/(2) to catch the ball . Will the person be able to catch the ball ? If yes, what should be the angle of projection theta ?

Solve cos theta * cos 2 theta * cos 3 theta = (1)/( 4), 0 le theta le pi

For all theta in [ 0, pi//2] , show that cos ( sin theta) gt sin (cos theta) .

Two identical balls A and B moving with velocities + 0.5 m/s and -0.3 .m/s respectively collide head-on elastically. The velocities of the ball A and B after collision will be respectively

Find the general value of theta from the equation costheta+cos2theta + cos3theta=0 .