10² - 3 = 100 – 3 = 97 13² - 3 = 169 – 3 = 166 15² - 3 = 225 – 3 = 222
What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?
If A lies in the first quadrant and 6 tan A = 5, then the value of 8 sin A−4 cos A / cos A+2 sin A is :
If tan(t) + cot(t) = 1, then one of the values of the expression 1/[sin(t)+cos(t)] is.
What is the value of cosec30° sec30°?
Simplify: sin (A + B) sin (A - B)
Simplify: sin 780° sin 480° + cos 120° sin 30°
If √3 tan 2θ – 3 = 0, then find the value of tanθ secθ – cosθ where 0 < θ < 90°
