If 7sin2θ + 3cos2θ = 4, (0° ≤ θ ≤ 90°), then the value of θ – McqOptions

MCQOPTIONS

1.	If 7sin2θ + 3cos2θ = 4, (0° ≤ θ ≤ 90°), then the value of θ is?
A.	$\frac{\pi }{2}$$
B.	$\frac{\pi }{3}$$
C.	$\frac{\pi }{6}$$
D.	$\frac{\pi }{4}$$
Answer» D. $\frac{\pi }{4}$$

Discussion

No Comment Found

Related MCQs

The expression of $$\frac{{\cot \theta+ \operatorname{cosec} \theta- 1}}{{\cot \theta+ \operatorname{cosec} \theta+ 1}}$$is equal to?
If secθ + tanθ = m(>1), then the value of sinθ is (0° < θ < 90°)
If $$\cot \theta= 4{\text{,}}$$then the value of $$\frac{{5\sin \theta+ 3\cos \theta }}{{5\sin \theta- 3\cos \theta }}$$is?
If 7sin2θ + 3cos2θ = 4, then the value of secθ + cosecθ is?
If tanθ = tan30° .tan60° and θ is an acute angle, then 2θ is equal to?
If sec15θ = cosec15θ (0° < θ < 10°) then the value of θ is?
If $$\frac{{\cos \theta }}{{1 - \sin \theta }}$$+ $$\frac{{\cos \theta }}{{1 + {\text{sin }}\theta }}$$= 4, then the value of $$\theta \left( {{0^ \circ } < \theta< {{90}^ \circ }} \right)$$is?
If $${\text{tan}}\theta= \frac{4}{3}{\text{,}}$$then the value of $$\frac{{3\sin \theta+ 2\cos \theta }}{{3\sin \theta- 2\cos \theta }}$$is?
If cos27° = x, then the value of tan63° is?
If θ is positive acute angle and 7cos2θ + 3sin2θ = 4, then value of θ is?