find the value of cos^-1(cos 4π/11)+sin^-1(sin 35π/11)
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Step-by-step explanation:
Formula :
- 1. (x + y + z)^{2} = x^{2} + y^{2} + z^{2} + 2xy + 2yz + 2zx(x+y+z)
So,
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Answer:
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