Question 1 :
Trigonometry is a branch of mathematics that studies relationships involving lengths and ______ of triangles.<br>
Question 2 :
If $\displaystyle \theta =45$ then $\displaystyle \frac { 2\tan { \theta  }  }{ 1+{ \tan }^{ 2 }\theta  } $ is :
Question 3 :
The given expression is $\displaystyle \sin { \theta  } \cos { \left( { 90 }^{ o }-\theta  \right)  } +\cos { \theta  } \sin { \left( { 90 }^{ o }-\theta  \right)  } +4 $ equal to :<br/>
Question 4 :
The history of trigonometry goes back to the earliest recorded mathematics in Egypt and _____.<br>
Question 5 :
If $\sec{2A}=\csc{(A-42^\circ)}$ where $2A$ is acute angle then value of $A$ is
Question 13 :
If $\tan \theta= \cot \theta$, then the value of $\sec \theta$ is :<br/>
Question 14 :
What is the value of $\displaystyle \sin { { 30 }^{ o } } \times co\sec{ 30 }^{ o }$?
Question 18 :
Given $\tan \theta = 1,$ which of the following is not equal to $\tan$ $\theta\ ?$
Question 20 :
If ${\rm{sin}}\,{\rm{\theta  + cosec\theta  = 2,}}\,{\rm{then}}\,\,{\rm{si}}{{\rm{n}}^{\rm{2}}}{\rm{\theta  + cose}}{{\rm{c}}^{\rm{2}}}{\rm{\theta }}\,$ is equal to:
Question 22 :
______ mathematicians created the trigonometry system based on the sine function instead of the chords.<br>
Question 26 :
$\displaystyle \sin { { 90 }^{ o } } $ is :
Question 28 :
Trigonometry is used mainly due to the purpose of time keeping and _____.<br>
Question 29 :
Solve : $\dfrac { 2tan{ 30 }^{ \circ  } }{ 1+{ tan }^{ 2 }{ 30 }^{ \circ  } } $
Question 32 :
The first recorded use of trigonometry came from the Hellenistic mathematician ________________.<br>
Question 35 :
If $\displaystyle \theta ={ 30 }^{ o }$ then $\displaystyle \cos { 2\theta } $ is :
Question 37 :
Express $\displaystyle \cos { { 79 }^{ o } } +\sec { { 79 }^{ o } } $ in terms of angles between $\displaystyle { 0 }^{ o }$ and $\displaystyle { 45 }^{ o }$