If 7sin2x + 3cos2x = 4 then, secx + cosecx =
Using the formula cos 2θ = 1-2 sin2θ the value of sin 15° is
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When 0°< θ < 90°, and 2cos θ = 1 the value of θ is
If tanθ > 0, sinθ > 0, then the terminal arm of the angle lies in the quadrant
The value of cos θ cos(90° - θ) – sin θ sin (90° - θ) is:
tan2A – tan2B can also be written as.
The value of θ for which 2 cos2θ + sinθ - 2 = 0; 0° < θ < 90° is:
If 2 cos(A + B) = 1, and 2 sin(A –B) = 1 then the values of A and B are
If a cosθ + b sinθ = 4 and a sinθ – b cosθ = 3, then a2 + b2 is
If θ is an acute angle and tan θ + cot θ = 2, then the value of tan7θ + cot7θ is is
124 videos|457 docs|77 tests
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124 videos|457 docs|77 tests
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