Geometry and TrigonometryMediumSum of two special-angle values
Geometry and Trigonometry practice question
What is the value of sin 30° + cos 60°?
Answer: 1
sin 30° = 1/2 and cos 60° = 1/2 (the two are equal because 30° and 60° are complementary). Their sum is 1.
Common wrong answers
- If you answered 0
- 0 would need the two values to cancel; both are positive.
- If you answered 0.5
- 0.5 is either term alone.
- If you answered 1.37
- 1.37 is about sin 30° + cos 30° (0.5 + 0.87); the second term is cos 60°.
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