Identify the quadrant in which an angle of each given measure lies; 25⁰

Identify the quadrant in which an angle of each given measure lies; -55⁰

Two vehicles leave the same place P at the same time moving along two different roads. One vehicle moves at an average speed of 60 km/hr and the other vehicle moves at an average speed of 80 km/hr. After half an hour the vehicle reach the destinations A and B. If AB subtends 60^o at the initial point P, then find AB.

Show that \(\frac { (cos\theta -cos3\theta )(sin8\theta +sin2\theta ) }{ (sin5\theta -sin\theta )(cos4\theta -cos6\theta ) } =1\)

For each given Angle, find a coterminal angle with a measure of \(\theta\) such that \(0^o\le \theta \le 360°\) 
-450⁰ 

Prove that \(sinx+sin2x+sin3x=sin2x(1+2cosx)\)

If sec \(\theta\) + tan \(\theta\) = p, obtain the values of sec \(\theta\), tan \(\theta\) and sin \(\theta\) in terms of p

Prove that sin (45^o + \(\theta\)) - sin (45^o - \(\theta\)) = \(\sqrt { 2 } \sin { \theta } \)

Find the degree measure corresponding to the following radian measure; \(\frac { \pi }{ 9 } \)

Find the degree measure corresponding to the following radian measure; \(\frac { 2\pi }{ 5 } \)

Evaluate sin\(\left( \frac { -11\pi }{ 3 } \right) \).

If cos A = \(\frac { 4 }{ 5 } \), cos B = \(\frac { 12 }{ 13 } ,\frac { 3\pi }{ 2 } \)\(\pi \), find cos(A + B)

Prove that 2\(cos\left( \frac { \pi }{ 13 } \right) cos\left( \frac { 9\pi }{ 13 } \right) +cos\frac { 3\pi }{ 13 } +cos\frac { 5\pi }{ 13 } \) = 0

Prove that \(\frac { cos9x-cos5x }{ sin17x-sin3x } =-\frac { sin2x }{ cos10x } \)

Find the general solution of \(\sqrt { 3 } \) sec 2x = 2