If sinA,cosA & tanA are in GP find the value of cos^3A + cos^2A
Answers
Answered by
1
since they are in gp
therefore
cosa/sina=tana/cosa......common ratio
cos^2a=tanasina
cos^3a=sin^2a
cos^3a-(1-cos^2a)=0
cos^3a+cos^2a=1
.......ans......
therefore
cosa/sina=tana/cosa......common ratio
cos^2a=tanasina
cos^3a=sin^2a
cos^3a-(1-cos^2a)=0
cos^3a+cos^2a=1
.......ans......
saurabhsemalti:
hope... u will mark it as brainliest
Thanks a lot
Wlcm... mark it if it helped
Similar questions