Question

The expression 2sin2? + 4sin4? + 6sin6? + Â…Â….. + 180sin180? equals A) cot 1? B) 90cot1? C) sin1? D) 90cos1?

Answer 1

So, the answer is B) 90 cot1
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Answer 2

Answer:

The correct answer of this question is 180(sin2°+sin4°+..........sin88°)+90

Step-by-step explanation:

Given - The expression 2sin2? + 4sin4? + 6sin6

To Find - Choose the correct option.

2sin2° + 178sin2°+ 4sin4° + 176sin4°+----90sin190°

180(sin2°+sin4°+..........sin88°)+90

180(sin2°+sin4°+..........sin88°)+90

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