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05-09-2019
Mathematics

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Prove that sin^2 pi/6 + cos^2 pi/3 - tan^2 pi/4 = -1/2

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Аноним Аноним

05-09-2019

Answer:

See below.

Step-by-step explanation:

sin pi/6 = 1/2

cos pi/3 = 1/2

tan pi/4 = 1

So sin^2 pi/6 + cos^2 pi/3 - tan^2 pi/4

= 1/4 + 1/4 - 1

= -1/2.

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