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objective Ques (310 results)
261)

If \(\sec^2θ = 3\), 0° < θ < 90°, then the value of \(tan^2θ - cosec^2θ \over tan^2θ + cosec^2θ\) is :

A)

4/7

B)

2/7

C)

1/7

D)

3/7

262)

If \(tan^2θ = 1-e^2\) , then the value of \(secθ + tan^3 θ.cosecθ\) is:

A)

\((2+e^2)^{3 \over 2}\)

B)

\((2-e^2)^{3 \over 2}\)

C)

\((2+e^2)^{1 \over 2}\)

D)

\((2-e^2)^{1 \over 2}\)

263)

If \(cos\theta = {p \over \sqrt {p^2+q^2}}\), then the value of tanθ is

A)

\(q \over p\)

B)

\({p \over {p^2+q^2}}\)

C)

\({q \over \sqrt {p^2+q^2}}\)

D)

\({q \over \sqrt {p^2-q^2}}\)

264)

If \(sin \theta = {a \over b}\), then the value of secθ - cosθ is where 0° < θ < 90°

A)

\(a^2 \over {b \sqrt{b^2+a^2}}\)

B)

\(b^2 \over {a \sqrt{b^2-a^2}}\)

C)

\(a^2 \over {b \sqrt{b^2-a^2}}\)

D)

\(\sqrt{b^2+a^2} \over { \sqrt{b^2-a^2}}\)

265)

Find the value of \(cot30°+cot75°+cot45°-sin90°+sin45° \over sin60°+cos30°+ tan15°+cos45°\) 

A)

0

B)

1

C)

\(\sqrt 3-1\)

D)

-1

266)

If \({xcosec^230°. sec^245° \over 8 cos^245°.sin^260° } = tan^260°- tan^230°,\) then the value of x is:-

A)

-1

B)

0

C)

1

D)

2

267)

The value of x in the equation \(tan^2{π\over 4}-cos^2{π\over 3} = x sin{π\over 4}.cos{π\over 4}.tan{π\over 3}\) is:-

A)

√3

B)

√2

C)

1/√3

D)

√3/2

268)

The value of cos1°. cos2°.cos3°..........cos179° is 

A)

1

B)

-1

C)

2

D)

0

269)

If tan (θ1 + θ2) = √3 and sec (θ1 - θ2) = 2/√3 , then the value of sin2θ1 + tan3θ2 is equal to (assume 0°< θ1 - θ2 < θ1 + θ2 < 90° 

A)

0

B)

3

C)

1

D)

2

270)

 If secθ + tanθ = √3 (0° ≤ θ ≤ 90°) then the value of tan3θ = ?

A)

undefined 

B)

1/√3

C)

1/√2

D)

√3

showing 261 - 270 results of 310 results

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