In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find out the value of cos A?
If x tan 60° + cos 45° = sec 45° then the value of x2 + 1 is
What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2]?
If 2cosA + secA = 2√2 , 0° < < 90°, then the value of 2(sec 4 A + cosec 4 A) is:
The Value of (sin38˚)/(cos52˚) + (cos12˚)/(sin78˚) - 4cos²60˚ is
If (2sin A + cos A) = 3sin A, then find the value of cot A.
If sin α + cos β = 2 (0˚ ≤ β < α ≤ 90˚), then sin[(2α + β)/3] =?
The angle of depression of vertex of a regular hexagon lying in a horizontal plane, form the top of a tower of height 135 m located at the centre of the...
Find the value of sin 30°.