Question
If in the number '89486365', '1' is added to all the
even digits, then, which of the following digit is not repeated in the new number?Solution
8         9         4         8         6         3         6         5 9         9         5         9         7         3         7         5         So, only ‘3' is not repeated in the new number.
If 8sin²x + 4cos²x − 6 = 0, then find the value of sinx, given that 0° < x < 90°.
- Find the value of sin²50° + sin²40°.
tan 4˚ × tan 43˚ × tan 47˚ × tan 86˚ = ?
If cos2B = sin(1.5B + 48o), then find the measure of 'B'.
sin2 4˚ + sin2 6˚ + sin2 8˚ + sin2 10˚ + ……… + sin2 86˚ =?
If asinx +b cosx = c then find the value of acosx - bsinx =?
Find the value of the given trigonometric expression:
(sin 25°cos 65° + cos²25°) × sin 30° + (cos 60°tan 45°) × sec 60°
...- Calculate the value of sin120 o  + cos180 o  + tan225 o .
Find the value of the given expression.
5 × (cos 60°)
If secθ + tanθ = 3+√10, then the value of sinθ+cosθ is
