If √5 cosx + √15sinx = 0, for 0° < x &...
If √5 cosx + √15sinx = 0, for 0° < x < 360°, find the values of x.
30° and 150°
150° and 210°
150° and 330°
210° and 330°
Correct answer is C
√5 cosx + √15sinx = 0;
√5 (cosx + √3sinx) = 0
cosx = -sinx√3; sinxcos = −1√3
tanx = −1√3; x = 150° or 330°
The coefficient of the 7th term in the binomial expansion of (2−x3)10 in ascending...
Solve the inequality x2−2x≥3...
Which of the following is a singular matrix? ...
Find the equation of the line passing through (0, -1) and parallel to the y- axis. ...
Adu's scores in five subjects in an examination are 85, 84, 83, 86...
The table shows the distribution of the distance (in km) covered by 40 hunters while hunting. ...
If \sin\theta = \frac{3}{5}, 0° < \theta < 90°, evaluate \cos(180 - \theta)....
Given the statements: p : the subject is difficult q : I will do my best Which of the follo...