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Solve this faster with the right shortcut first
Shortcut used: Identify the quantity asked, write the given values, then apply the direct arithmetic formula.
Solve in 3 steps:
- List the given numbers and units.
- Choose the formula that matches the asked value.
- Simplify carefully and compare with options.
Common mistake: Do not use a reasoning pattern shortcut in a quantitative question.
Question 3
Multiple Choice Question
Question
What is the value of cos 60° + sin 30°?
Explanation
Correct Answer: B
ANSWER
Correct Answer: B
Method / Topic: Trigonometry
The value is 1.
Why this answer is correct
The answer follows from the arithmetic relation between the given values.
Short Explanation
The value is 1.
Detailed Explanation
Question
What is the value of cos 60° + sin 30°?
ANSWER
Correct Answer: B
Method / Topic: Trigonometry
cos 60°=1/2 and sin 30°=1/2, so the sum is 1.
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Question 3
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Identify the quantity asked, write the given values, then apply the direct arithmetic formula.
Solve in 3 steps:
- List the given numbers and units.
- Choose the formula that matches the asked value.
- Simplify carefully and compare with options.
Common mistake: Do not use a reasoning pattern shortcut in a quantitative question.
Question
What is the value of cos 60° + sin 30°?
Explanation
Correct Answer: B
ANSWER
Correct Answer: B
Method / Topic: Trigonometry
The value is 1.
Why this answer is correct
The answer follows from the arithmetic relation between the given values.
Short Explanation
The value is 1.
Detailed Explanation
Question
What is the value of cos 60° + sin 30°?
ANSWER
Correct Answer: B
Method / Topic: Trigonometry
cos 60°=1/2 and sin 30°=1/2, so the sum is 1.
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