Question

poare that
sinatsing
COSA-COSB
@ Centcon 3+ [sinat
şa.cos? (A-8 J. ut nes even
S
pertsodd​

Answer 1

Answer:

By using differentiate formula,

cos (A - B) = cos A cos B + sin A sin B

Here, we use sin because trigonometric identities

sin^2 + cos ^2 = 1 .

because cos is repical of sin

Hope this helps you.......

Answer 2

Step-by-step explanation:

good night dear..........

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