Question

please answer 61 no. i will mark it brainliest​

Answer 1

A=45

B=0

cosA=cos45=1/√2

cosB=cos0=1

Refer to attachment

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Answer 2

Answer:

Mate,

tan(A+B)=1

sin(2A-B)=1

Substitute the values of tan 45 and sin 90.

A+B=45

2A-B=90

solve the equation we find value of

A= 45

B = 0

cosA=cos45=1/√2

cosB=cos0=1

Hope it is helpful

Step-by-step explanation:

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