Multiple choice general knowledge math & puzzles

sin 90 + cos 90 + tan 90

  1. 1

  2. 2

  3. 3

  4. 1.5

  5. 0

  6. infinity
Reveal answer Fill a bubble to check yourself
F Correct answer
Explanation

Sin 90 is 1, Cos 90 is 0, but Tan 90 is undefined (approaching infinity). In basic mathematics, the presence of an undefined term in a sum makes the entire expression undefined or 'infinity'.

AI explanation

To answer this question, let's go through each term individually:

  1. sin 90: The sine of 90 degrees is equal to 1.

  2. cos 90: The cosine of 90 degrees is equal to 0.

  3. tan 90: The tangent of 90 degrees is undefined. It approaches infinity as the angle approaches 90 degrees.

Now let's calculate the given expression:

sin 90 + cos 90 + tan 90 = 1 + 0 + infinity

Since infinity is not a finite number, the correct answer is F.

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