cos-x-2cos-y-3-sin-x-y-2-2-3-what-is-sin-x-2sin-y- Tinku Tara June 4, 2023 Trigonometry 0 Comments FacebookTweetPin Question Number 80941 by jagoll last updated on 08/Feb/20 cosx−2cosy=−3sin(x−y)=223whatissinx−2siny? Commented by john santu last updated on 08/Feb/20 letsinx−2siny=tsquaringcos2x−4cosxcosy+4cos2y=3sin2x−4sinxsiny+4sin2y=t2sum:5−4cos(x−y)=t2+32−t2=4cos(x−y)fromsin(x−y)=223⇒cos(x−y)=13∴2−t2=43⇒2−3t2=0t=±63 Commented by jagoll last updated on 08/Feb/20 thankyou Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: if-4a-7b-2c-and-dcm-a-b-c-3-find-a-b-c-Next Next post: A-body-is-projected-at-time-t-0-from-a-certain-point-on-a-planet-surface-with-a-certain-velocity-at-a-certain-angle-with-the-planet-s-surface-assumed-horizontal-The-horizontal-and-vertical-displa Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.