Question

Trigonometry
please help​

Answer 1

Answer:

cos A =1/2

cos A =cos60° (cos1/2=cos60°)

A = 60°

cos B = 1/root2

cos B = cos45° (cos1/root2=cod 45°)

B =45

(tan A - tan B)/1 + tan A tan B

(tan 60 - tan 45)/1 + tan 60 tan 45

(root3 - 1)/1+root3

(root3-1)/root3+1

[(root3-1)/(root3+1)]×[(root3-1)/(root3-1)]

(root3-1)^2/3-1

(3+1-2 root3)/2

(4-2 root3)/2

2(2-root3)/2

2-root3

hope it will help you

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Answer 2

Answer:

see the attachment for the solution..