Question

find the value of sin² 30 + cos² 60 - tan² 45
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Answer 1

Answer:

-0.5

Step-by-step explanation:

sin² 30 = 1/4

cos² 60 = 1/4

tan² 45 = 1

1/4 + 1/4 - 1 = -1/2 = -0.5