Question

plzzz with explanation it's urgent​

Answer 1

Answer:

A= +1

B= -1

Step-by-step explanation:

we know cos 0° = 1

so A+B = 0

B= -A _____(1)

olso

sec 60°= 2

so A-B = 2

Substitute eq (1) in above eq

A + A = 2

2A= 2

A= 1

SO B= -1

LOVE YOU ❤ AND THANK YOU