A rail road curve is to be laid out on a circle. What radius should be used if the track is to change direction by 25o in a distance of 40 metres?
The angle in radius measure
If r is the radius of the circle, using , we have
If π/2 < α < π, then the expression is equal to
If 0 < θ < π/2 and sin θ + cos θ + tan θ + cot θ + sec θ + cosec θ is equal to 7, then sin 2θ is a root of the equation
then tan θ1 tan θ2 tan θ3 tan θ4 is equal to
yz + zx + xy is equal to
Value of the determinant
x + y + z is equal to
Find the radian measure corresponding to –37o30’.
The minute hand of a clock is 10 cm long. How far does the tip of the hand move in 20 minutes?
Find the minimum and maximum values of .