If \( \cos A+\cos ^{2} A=1 \), then \( \sin ^{2} A+\sin ^{4} A= \) (a) \( -1 \) (b) 0 (c) 1 (d) ...

Channel:
PW Solutions
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=vmGMrpwP6fM


Duration: 2:52
0 views
0

If \( \cos A+\cos ^{2} A=1 \), then \( \sin ^{2} A+\sin ^{4} A= \)
(a) \( -1 \)
(b) 0
(c) 1
(d) none of these
W
ЁЯУ▓PW App Link - https://bit.ly/YTAI_PWAP
ЁЯМРPW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-20If \( \frac{\tan ^{3} \theta-1}{\tan \theta-1}=A \sec ^{2} \theta+B \tan \theta \), then \( A+B=...
2023-02-20The value of \( \sin ^{2} 2^{\circ}+\sin ^{2} 4^{\circ}+\sin ^{2} 6^{\circ}+\ldots+\sin ^{2} 90^...
2023-02-20If \( 2 \sin \theta+3 \cos \theta=2 \), then \( 3 \sin \theta-2 \cos \theta= \) (W)
2023-02-20If \( \sin \theta-\cos \theta=\frac{3}{5} \), then \( \sin \theta \cos \theta= \) (W)
2023-02-20The area of a right angled triangle is \( 165 \mathrm{~m}^{2} \). Determine its base and altitud...
2023-02-20рдорд╛рджрд╛ рдПрд╕реНрдХреЗрд░рд┐рд╕ рд▓реБрдореНрдмреНрд░рд┐рдХреЙрдЗрдбрд┐рд╕ рдХрд╛ рдЖрдХрд╛рд░ рд╣реЛрддрд╛ рд╣реИ (A) 50-80 рдорд┐рдореА. (B) 100-150 рдорд┐рдореА. (C) 150-250 рдорд┐рдореА....
2023-02-20Sum of the areas of two squares is \( 400 \mathrm{~cm}^{2} \). If the difference of their perime...
2023-02-20The value of \( \frac{\cos ^{4} \theta+\cos ^{2} \theta \sin ^{2} \theta+\sin ^{2} \theta}{\cos ...
2023-02-20A takes 10 days less than the time taken by B to finish a piece of work. If both A and B togethe...
2023-02-20The area af a rectangular plot is \( 528 \mathrm{~m}^{2} \). The length of the plot (in metres) ...
2023-02-20If \( \cos A+\cos ^{2} A=1 \), then \( \sin ^{2} A+\sin ^{4} A= \) (a) \( -1 \) (b) 0 (c) 1 (d) ...
2023-02-20If \( a \cos \theta+b \sin \theta=m \) and \( a \sin \theta-b \cos \theta=n \), then \( a^{2}+b^...
2023-02-20The value of \( \sqrt{6+\sqrt{6+\sqrt{6+}}} \ldots \) is (V) (a) 4 (b) 3 (c) \( -2 \) (d) \( 3.5 \)
2023-02-20Two squares have sides \( x \mathrm{~cm} \) and \( (x+4) \mathrm{cm} \). The sum of their areas ...
2023-02-20The positive value of \( k \) for which the equation \( x^{2}+k x+64=0 \) and \( x^{2}-8 x+k=0 \...
2023-02-20If the equation \( x^{2}-a x+1=0 \) has two distinct roots, then (a) \( |a|=2 \) (b) \( |a|2 \) ...
2023-02-20If the equation \( 9 x^{2}+6 k x+4=0 \) has equal roots, then the roots are both equal to (W) (a...
2023-02-20рдирд┐рдореНрдирд▓рд┐рдЦрд┐рдд рдореЗрдВ рд╕реЗ рдХреМрди рд╕рд╛ рдореЗрдЯрд╛рдЬреЛрдЕрди рдкрд░рдЬреАрд╡реА рд╕рдВрджреВрд╖рд┐рдд рднреЛрдЬрди рддрдерд╛ рдЬрд▓ рдХреЗ рджреНрд╡рд╛рд░рд╛ рдлреИрд▓рддрд╛ рд╣реИ (A) рдПрд╕реНрдХреЗрд░рд┐рд╕ (B)...
2023-02-20There are two temples, one on each bank of a river, just opposite to each other. One temple is \...
2023-02-20(i) A moving boat is observed from the top of a \( 150 \mathrm{~m} \) high cliff moving away fro...
2023-02-20рдордиреБрд╖реНрдпреЛрдВ рдХреЗ рдкрд░рд┐рдзреАрдп рд░реВрдзрд┐рд░ рдореЗрдВ рдорд╛рдЗрдХреНрд░реЛрдлрд╛рдЗрд▓реЗрд░рд┐рдпрд╛ рдХрд┐рд╕ рд╕рдордп рджрд┐рдЦрд╛рдИ рджреЗрддрд╛ рд╣реИ (A) рд╕реБрдмрд╣ (B) рд╢рд╛рдо (C) рд░рд╛рддреНрд░рд┐ ...