Topic
Q:
(d) \( \frac{\sin 15^{\circ}+\cos 15^{\circ}}{\sin 15^{\circ}-\cos 15^{\circ}}=-\sqrt{3} \)
Q:
51 \( X Y Z \) is a triangle in which \( \sin X=\cos X, m(\angle Y)=75^{\circ} \), then \( m(\angle Z)=\ldots \ldots \ldots \ldots \ldots \) in radian.
\( \begin{array}{llll}\text { (a) } \frac{\pi}{4} & \text { (b) } \frac{\pi}{6} & \text { (c) } \frac{\pi}{3} & \text { (d) } \frac{\pi}{5}\end{array} \)
Q:
\( \sin x + 3 \geq 2 ( \sin x + 2 ) \)
Q:
\( 2 \sin x + \sqrt { 2 } > 0 \)
Q:
What is the definition of the cotangent function in relation to a right triangle?
Q:
if \( \tan (a+b)=\frac{2}{5} \) And \( \tan (a-b)=\frac{3}{7} \)
what is \( \tan 2 a \) ?
Q:
a) Решите уравнение \( \frac{2 \sin ^{2} x+2 \sin x \cos 2 x-1}{\sqrt{\cos x}}=0 \).
б) Найдите все корни уравнения, принадлежащие отрезку \( \left[-\pi ; \frac{5 \pi}{4}\right] \).
Q:
Solve the following expres3ion
\( \sin 20^{\circ}+\sqrt{3} \sin 70^{\circ}= \) ?
Q:
In \( \triangle A B C, \cos \mathrm{~B} \)
Q:
Unidad 6. Poligonos \( v \) circunferencias.
29. Dado sen \( \mathrm{B}=3 / 5 \), encuentra el valor de \( \cos \mathrm{B} \).
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