Question

the value of sin65+sin25/cos65+cos25



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Answer 1

Answer:

Solution

B

B1

B1 sin25

B1 sin25 ∘

B1 sin25 ∘ cos65

B1 sin25 ∘ cos65 ∘

B1 sin25 ∘ cos65 ∘ +cos25

B1 sin25 ∘ cos65 ∘ +cos25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos 2

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos 2 25

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos 2 25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos 2 25 ∘

B1 sin25 ∘ cos65 ∘ +cos25 ∘ sin65 ∘ =sin25 ∘ sin(90 ∘ −65 ∘ )+cos25 ∘ cos(90 ∘ −65 ∘ )=sin25 ∘ sin25 ∘ +cos25 ∘ cos25 ∘ =sin 2 25 ∘ +cos 2 25 ∘ =1