Question

secA-cosA=0 then sin power4A+ cos power4A=​

Answer 1

Answer:

answer is 1

Step-by-step explanation:

sec A- cos A = 0

then secA= cosA

1/cos A= cosA

cos^2A =1

1- cos^2A= sin^2A=0

then sin^4A+cos^4A = 0+ 1= 1