The phrase "a tactic that appeared" is correct and usable in written English.
You can use it when discussing a strategy or method that has emerged or been introduced in a particular context.
Example: "In the recent analysis, a tactic that appeared effective was the use of social media to engage younger audiences."
Alternatives: "a strategy that emerged" or "a method that surfaced".
Mr Cameron has gone further, calling them "fruitcakes" and "closet racists".Unfortunately, it's a tactic that appears not to be working very well.
These included supporting a Republican write-in candidate who challenged Moore and creating false evidence that automated Russian accounts, called bots, were backing Moore, a tactic that appears to have generated misleading news coverage during the election.
While drone strikes allow the US to conduct a war at minimal risk to its troops, analysts question the effectiveness of a tactic that appears aimed more at keeping a terrorist threat at bay than at tackling the appeal of a militant group that is increasingly looking to recruit marginalised Muslims in neighbouring Kenya to its cause, reflected by the growing number of deadly attacks on Kenyan soil.
He says that EMC, a notoriously high-pressure environment, has given its sales force incentives to sell more software, a tactic that appears to be working.
"Those agencies are now attempting to conceal information that would shed light on tactics that appear to have been illegal.
"British police risk losing the battle for the public's consent if they win public order through tactics that appear to be unfair, aggressive and inconsistent," he said.
What this means is that two "news" outlets can cover the exact same story but appeal to their distinct audiences (and what they want) using tactics that appear to be undeniably true to those audiences.
Unlike patrol officers, who are usually equipped with pepper spray and a nightstick to subdue a suspect, most plainclothes officers often carry only a gun, a tactic that helps them appear inconspicuous but also means the stakes can rise rapidly during a violent confrontation.
For five hours, Democrats and Republicans on the House Energy and Commerce Committee took turns swiping at Zuckerberg, holding him to "yes" and "no" questions and frequently cutting him off -- a tactic that at times appeared to frustrate the Facebook co-founder.
Making McCain appear amiable, this was a tactic that will no doubt go down well with Republican voters.
