This is something I've never really gotten the hang of... If tan 20 = t ; how could the following be expressed in terms of t? a) tan 70 b) tan 40 c) tan 200 d) sec 20 My answers: a) b) c) d)
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b)
Hello, janvdl! It looks like you've got the hang of it . . . If , how could the following be expressed in terms of ? My answers: For (b), use the Double-Angle Identity: . And your answers are correct . . . nice work!
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