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9)If sinA - COSA=0, Find the value of COSA​

Sagot :

Bosm93idn

Answer:

[tex] \frac{\pi}{4} + k\pi[/tex]

Where k is from Z

Step-by-step explanation:

We know that sin(A) = cos(A) are equal in 45° + k*180°

Hhalmararridn

sin A - cos A = 0

sin A = cos A

sin A = sin ( 90 - A)

A = 90 - A

2 A = 90

A = 45°

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