60º 0r 120º
30º 0r 150º
30º 0r 120º
60º 0r 150º
Correct answer is B
4sin2θ + 1 = 2
4sin2θ = 2 - 1
4sin2θ = 1
\sqrt sin^2θ = \sqrt \frac{1}{4}
sinθ = \frac{1}{2}
θ = sin^{-1} \frac{1}{2}
θ = 30º 0r 150º
Find the standard deviation of the numbers 3,6,2,1,7 and 5. ...
The 3rd and 7th term of a Geometric Progression (GP) are 81 and 16. Find the 5th term. ...
If (2t - 3s)(t - s) = 0, find \frac{t}{s}...
Two forces F_{1} = (10N, 020°) and F_{2} = (7N, 200°) act on a particle. Find the re...
Given that P = \begin{pmatrix} y - 2 & y - 1 \\ y - 4 & y + 2 \end{pmatrix} and |P| = -2...
Find the equation of a circle with centre (2, -3) and radius 2 units. ...
If P = {n^{2} + 1: n = 0,2,3} and Q = {n + 1: n = 2,3,5}, find P\cap Q....
The sum and product of the roots of a quadratic equation are \frac{4}{7} and \frac{5}{7} res...