prove that: tan 20°. tan 40°. tan 60°. tan 80°=3 Get link Facebook X Pinterest Email Other Apps October 06, 2018 Get link Facebook X Pinterest Email Other Apps Comments
Prove by the method of induction, for all n ∈ N, 8 + 17 + 26 + …. + (9n-1) = n/2 (9n + 7) October 03, 2018 Read more
Prove by the method of induction, for all n ∈ N, 1^2 + 4^2 + 7^2 + … + (3n-2)^2 = n/2 (6n^2-3n-1) October 03, 2018 Read more
Prove by the method of induction, for all n ∈ N, 8 + 17 + 26 + …. + (9n-1) = n/2 (9n + 7) October 03, 2018 Read more
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