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What is the value of tan 45˚?
1
None of these
tan 45˚ = 1
Find the value of sin2 45˚ + cos2 30˚.
sin 45˚ = and cos 30˚ =
∴ sin2 45˚ + cos2 30˚ = =
What is the value of sec 0˚?
0
2
cos 0˚ = 1; hence, sec 0˚ = 1
What is the value of cot 90˚?
cot90˚ =
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