Answer:
The correct option is d
d) (√2 - √6)/4
Step-by-step explanation:
The term given in the question is:
cos (-7π/12)
Solve the term by using scientific calculator:
cos (-7π/12) = (1 / 2√2) - (√3 / 2√2)
Mulitplying and dividing both terms on the right hand side of equality with 2√2:
(1 / 2√2) - (√3 / 2√2) = (1 / 2√2)(2√2 / 2√2) - (√3 / 2√2)(2√2 / 2√2)
(1 / 2√2)(2√2 / 2√2) - (√3 / 2√2)(2√2 / 2√2) = 2√2 / (2√2)² - (2√2)(√3) / (2√2)²
2√2 / (2√2)² - (2√2)(√3) / (2√2)² = 2√2 / (4)(2) - 2√6 / (4)(2)
2√2 / (4)(2) - 2√6 / (4)(2) = √2/4 - √6/4
√2/4 - √6/4 = (√2 - √6)/4
Answer:
16
Step-by-step explanation:
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<u>To find:</u>
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<u>Formula:</u>
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Here,
Squaring both sides of:
Using formula written above on LHS:
Given
So, correct answer is:
Answer:
You need to add the options to choose from. Otherwise, you have to hope and pray that someone who did the same question as you and knows the correct answers comes along.
Yes because 6x75=450
6x70=420
6x80=480
So 420+30=450
450+30=480