Numbers can be expressed in fractions as well as in decimals. First let us know the definitions of both. Decimal A decimal number is a number... View Article
To convert decimal into fraction we follow the given steps Firstly, count the numbers after the decimal point or right side of the decimal... View Article
We can find the value of Sin 150 with the help of sin 30 degrees. (Sin P/2 + Cos P/2)2 = Sin2 P/2 + Cos2 P/2 +2Sin P/2Cos P/2 = 1 + sinP Sin... View Article
We have to find the square root of 23. First, let us find the nearest perfect square to 23. 25 is the nearest perfect square around 23 Now let... View Article
We have to evaluate cos A + cos B + cos C if A B C are angles of triangle. We know that all the angles of a triangle sum up to 180 degrees... View Article
To convert decimal into fraction we have o follow the following steps First count the numbers after the decimal point or right side of the... View Article
we know that , tan( A + B ) = ( tanA + tanB )/( 1 - tanAtanB ) Now tan 2x can be expressed as tan 2x = tan( x + x ) = [ tanx + tanx ] / [ 1 -... View Article
To Convert Degrees to Radians we use the formula given below Angle in radian = Angle in degree x (π/180) Given, 90 degrees is the angle... View Article
We have to prove sin (90 - A) = cos A We know the trigonometric identity sin (A - B) = sin A.cos B - sin B.cos A Hence substituting A= 90... View Article