Step-by-step explanation:
Left hand side:
tan 203° + tan 22° + tan 203° · tan 22°
From angle sum identities, we know:
tan (α + β) = (tan α + tan β) / (1 − tan α · tan β)
Therefore:
tan (203° + 22°) = (tan 203° + tan 22°) / (1 − tan 203° · tan 22°)
tan (225°) = (tan 203° + tan 22°) / (1 − tan 203° · tan 22°)
1 = (tan 203° + tan 22°) / (1 − tan 203° · tan 22°)
tan 203° + tan 22° = 1 − tan 203° · tan 22°
Substituting:
1 − tan 203° · tan 22° + tan 203° · tan 22°
1
Answer:
The answer is B
Step-by-step explanation:
The area of the square whose diagonal 712 units is 253472 units²
Step-by-step explanation:
You can find area of a square by using one of the two rules:
1. Area of a square = s², where s is the length of its side
2. Area of a square =
, where d is the length
of its diagonal
∵ The length of the diagonal of the square is 712 units
∵ The area of the square = 
∴ The area of the square = 
∴ The area of the square = 253472 units²
The area of the square whose diagonal 712 units is 253472 units²
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Answer:
Step-by-step explanation:
For the first one |8 1/12| the option is D
And for the second one the option is D