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tensa zangetsu [6.8K]
2 years ago
7

Write the expression as the sine, cosine, or tangent of an angle.

Mathematics
1 answer:
Naily [24]2 years ago
4 0

Step-by-step explanation:

the formula is :

tan (a+b) =

(tan (a) + tan (b)) / ( 1 - tan (a) . tan (b))

therefore

tan (π/5) + tan (π/2)) / (1-tan (π/5) tan (π/2))

= tan (π/5 + π/2)

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120°

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