Question

Very urgent need proper answer with steps
sin 9 multiplied cos9 equals to?

a) root 5-1/2

b) root 5-1/4

c) root 5-1/16

d) root 5-1/8

Answer 1

Answer:

Your answer is d) root 5-1/8 ok

Step-by-step explanation:

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Answer 2

since we know that 2sin@cos@=sin2@

therefore in the question since it is given sin9°cos9° therefore we have to apply that formula .....2sin9°cos9° = sin18°

=> sin9°cos9° = sin18°/2

=> sin9°cos9°=(root 5 -1/4)/2

=> sin9°cos9°= root 5-1/2..is the correct answer.....don't rely on any other solution other than this....Mark as brainliest and follow me