Recent questions tagged Trigonometric functions

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If in ∆ ABC, cotA+ cotB+cotC=cotx, then prove that, sin^3(x) =sin(A-x) sin(B-x) sin(C-x)?

asked Jul 11, 2019 in Class XII Maths by Swarna (5 points)

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The value of sin 50° – sin 70° + sin 10° is equal to

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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If tan A = 1/2 and tan B = 1/3 then tan (2A + B) is equal to

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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The value of cos 12° + cos 84° + cos 156° + cos 132° is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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cos 2 ϴ cos 2φ + sin2 (ϴ - φ) - sin2 (ϴ + φ) is equal is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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The value of (π/4+ ) cot (π/4- ) is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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The value of sin (45° + )- cos (45° – ) is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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The value of tan 3A – tan 2A – tan A is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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The minimum value of 3 cos x + 4 sin x + 8 is

asked Feb 17, 2018 in Class XI Maths by rahul152 (-2,838 points)

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If tan α = (m/m+1) and tan β = (1/2m+1), then α+β is equal to

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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Which of the following is correct ?

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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The value of tan 75° – cot 75° is equal to

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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If tan θ = 3 and θ lies in the third quadrant, then the value of sin θ is

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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The value of cos 1° cos 2° cos 3° … cos 179° is

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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The value of (1-tan2 15°)/ (1+tan2 15°) is

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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The value of tan 1° tan 2° tan 3° … tan 89° is

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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Which of the following is not correct ?

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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If tan θ = 1/2 and tan ϕ = 1/3, then the value of θ + ϕ is

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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If f(x) = cos2 x + sec2 x, then ‘

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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If sin + cosec =2, then sin2 + cosec2 is equal to

asked Feb 17, 2018 in Class XI Maths by vijay Premium (539 points)

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