Mathematics, 01.04.2021 01:00 CJunc95801
Which double-angle or half-angle identity would you use to verify that 1+cos2a=2/1+tanx^2a? a. tan2a=2tana/1-tan^2a b. tana/2=+- sqaure root of 1-cosa/1+cosa c. cos2a=cos^2a-sin^2a d. cos2a=2cos^2a+1
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Which double-angle or half-angle identity would you use to verify that 1+cos2a=2/1+tanx^2a? a. tan2a...
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