Question

prove that cos30/cos 0+sin30/sin0. 4cos20

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Answer 1

Step-by-step explanation:

cos30=root 3/2

cos0=1

sin30=1/2

sin0=0

=) root(3/2) / 1 + (1/2) / 0 × 4×cos20

cos20= sin (90-A) =cosA

sin(90-20)=cos20

sin(70)=cos20