Question

given that 16 tan A=12;find the value of (cos A + sin A)/ (cos A - sin A)
if A=B=60 verify that cos (A-B)= cos A cos B + sin A sin B
Find 4 (sin² 30+cos²45-tan²45)

Answer 1

answer is 7

(cos A +sin A)/(cosA-sinA)

(4/5+3/5) / (4/5-3/5)

(20+15/5)/(20-15/5)

35/5×5/5

=7

hope it will help u

if in mine any mistake plz correct me guys

Answer 2

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