Question

Express sin75+cos65 in terms of trigonometry ratios of angle between 0 and 45

Answer 1

sin75=sin(90-15)

=cos15

cos65=cos(90-25)

=sin25

Thus, cos15 + sin25 is the answer

Answer 2

Answer:

sin75°+cos65°=cos15°+sin25°

Step-by-step explanation:

sin75°+cos65°

=sin(90-15)+cos(90-25)

= cos15°+sin25°

Therefore,

sin75°+cos65°=cos15°+sin25°

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