Express cos150° in surd form.

Similar Questions

In △PQR, $\overline{PQ}$ = 5i - 2j and $\overline{QR}$ = 4i + 3j. Find \(\...

P(3,4) and Q(-3, -4) are two points in a plane. Find the gradient of the line that is normal to the ...

If $\frac{1}{5^{-y}} = 25(5^{4-2y})$, find the value of y....

A ball is thrown vertically upwards with a velocity of 15$ms^{-1}$. Calculate the maximum height r...

$\alpha$ and $\beta$ are the roots of the equation $2x^{2} - 3x + 4 = 0$. Find \(\alpha + \bet...

The sum and product of the roots of a quadratic equation are $\frac{4}{7}$ and $\frac{5}{7}$ res...

The angle subtended by an arc of a circle at the centre is $\frac{\pi}{3} radians$. If the radius ...

A binary operation * is defined on the set of real numbers, R, by $x * y = x + y - xy$. If the ide...

Given that $n = 10$ and $\sum d^{2} = 20$, calculate the Spearman's rank correlation coeffic...

The probabilities that Atta and Tunde will hit a target in a shooting contest are $\frac{1}{6}$ an...