Question Text
Question 1 :
Is this equality correct ?$(cosec A – sin A) (sec A – cos A)= \frac{1}{tan A +cot A}$
Question 2 :
(sec A + tan A) (1 – sin A) = ______
Question 8 :
$\cos 38^{\circ} \cos 52^{\circ} – \sin 38^{\circ} \sin 52^{\circ} \ne 0$. TRUE or FALSE?
Question 10 :
Is $\frac{cos A – sin A + 1}{cos A + sin A - 1}= cosecA + cotA$?
Question 11 :
Is $(sin A + cosec A)^2 + (cos A + sec A)^2 = 7 + tan^2 A + cot^2 A$?
Question 16 :
$\tan 48^{\circ} \tan 23^{\circ} \tan 42^{\circ} \tan 67^{\circ} = 1$. TRUE or FALSE?
Question 17 :
If $\sec 4A = cosec\ \begin{pmatrix}A – 20^{\circ}\end{pmatrix}$, where 4A is an acute angle, find the value of A.
Question 18 :
$\sin 2A = 2 \sin A$ is true when A is equal to
Question 22 :
(1 + tan θ + sec θ) (1 + cot θ – cosec θ) = ____
Question 26 :
Evaluate : $sin 25° cos 65° + cos 25° sin 65°$