Question

# B=15°, then prove that sin 2B •cos 4B •sin 6B = 1​

Answer 1

Answer:

B = 15°  ---> sin(2B) = sin30° = 1/2  ,  cos(4B) = cos60° = 1/2  ,  sin(6B) = sin90° = 1

then,

4sin(2B) cos(4B) sin(6B) = 4*(1/2)(1/2)(1) = 1

Step-by-step explanation:

Answer 2

Answer:

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Step-by-step explanation:

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