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3. Trigonometric Functions
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Q47 of 76 Page 52

If then tan (2A + B) is equal to

Given that,


We know that.


Now,





=3

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45

cos 2θ cos 2ϕ + sin2(θ–ϕ) – sin2(θ + ϕ) is equal to

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48

The value of is

49

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Questions · 76
3. Trigonometric Functions
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