If \( \sin \alpha=\frac{4}{5} \) and \( \cos \beta=\frac{4}{5} \), then which of the following i... VIDEO
If \( \sin \alpha=\frac{4}{5} \) and \( \cos \beta=\frac{4}{5} \), then which of the following is true?https://bit.ly/YTAI_PWAP https://www.pw.live
Other Videos By PW Solutions 2022-10-26 If \( a=\sec \theta-\tan \theta \) and \( b=\sec \theta+\tan \theta \), then
(a) \( a=b \).
(b) ... 2022-10-26 Simplified expression of \( (\sec \theta+\tan \theta)(1-\sin \theta) \) is
(a) \( \sin ^{2} \the... 2022-10-26 A wheel makes 20 revolutions per hour. The radians it turns through 25 minutes is
(a) \( \frac{5... 2022-10-26 Prove that \( \sin ^{8} \theta-\cos ^{8} \theta=\cos 2 \theta\left(2 \sin ^{2} \theta \cos ^{2} ... 2022-10-26 If \( \sin A=\frac{3}{5} \) and \( A \) is not in the first quadrant, then find \( \frac{\cos A+... 2022-10-26 \( \sin \theta \cos \left(90^{\circ}-\theta\right)+\cos \theta \sin \left(90^{\circ}-\theta\righ... 2022-10-26 The circum-centre of the triangle formed by the lines \( x+4 y=7,5 x+3 y=1 \) and \( 3 x-5 y=21 ... 2022-10-26 \( \cos 50^{\circ} 50^{\prime} \cos 9^{\circ} 10^{\prime}-\sin 50^{\circ} 50^{\prime} \sin 9^{\c... 2022-10-26 Show that \( 6(\sin x+\cos x)^{4}+12(\sin x-\cos x)^{2}+ \) \( 8\left(\sin ^{6} x+\cos ^{6} x\ri... 2022-10-26 A vertical pole is \( 60 \mathrm{~m} \) high. The angles of depression of two points \( P \) and... 2022-10-26 If \( \sin \alpha=\frac{4}{5} \) and \( \cos \beta=\frac{4}{5} \), then which of the following i... 2022-10-26 If \( \sin x^{\circ}=\sin \alpha^{\circ} \), then \( \alpha \) is
(a) \( \frac{180}{\pi} \)
(b) ... 2022-10-26 If in a triangle \( A B C, A \) and \( B \) are complementary, then \( \tan C \) is
(a) \( \inft... 2022-10-26 Prove that
\[
\left(\frac{1-\sin \alpha}{\cos \alpha}+\frac{\cos \alpha}{1+\sin \alpha}\right)\l... 2022-10-26 If \( \operatorname{cosec} \theta-\cot \theta=2 \), then find the value of \( \operatorname{cose... 2022-10-26 The angle of depression of the top of the tower from the top of a building is \( 30^{\circ} \) a... 2022-10-26 Prove that \( \frac{\cot A+\operatorname{cosec} A-1}{\cot A-\operatorname{cosec} A+1}=\frac{1+\c... 2022-10-26 Eliminate \( \theta \) from the following equations: \( x \sin \alpha \) \( +y \cos \alpha=p \) ... 2022-10-26 A ladder of length \( 50 \mathrm{~m} \) rests against a vertical wall, at a height of \( 30 \mat... 2022-10-26 If \( 3 \sin A+4 \cos A=4 \), then find \( 4 \sin A-3 \cos A \). 2022-10-26 If \( \cos (A-B)=\frac{5}{13} \) and \( \sin (A+B)=\frac{4}{5} \), then find \( \sin 2 B \)
0