Math, asked by samimaginator9999, 3 months ago

49. Prove geometrically cos(x + y) = cos x cosy - sin x sin y
a) and hence find cos (x + x).
b) Find the derivative of f(x) = (x + cos x) (x - tan x).​

Answers

Answered by pulkityadav246
2

Answer:

ghdhj dhjfh duigf ghit fjjgg hjfgh

Step-by-step explanation:

प्लीज मुझे

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