Advertisements
Advertisements
प्रश्न
Find the value of 'x' in each of the following:
Advertisements
उत्तर

From the figure, we have
sin60° = `"BC"/"AC"`
⇒ `sqrt(3)/(2) = (12)/x`
⇒ x
= `(2 xx 12)/sqrt(3)`
= `24/sqrt(3)`
= `(8 xx 3)/sqrt(3)`
= `8sqrt(3)`.
APPEARS IN
संबंधित प्रश्न
State for any acute angle θ whether sin θ increases or decreases as θ increases
If sin x + cos y = 1 and x = 30°, find the value of y
If 4 cos2 x = 3 and x is an acute angle;
find the value of :
(i) x
(ii) cos2 x + cot2 x
(iii) cos 3x (iv) sin 2x
State for any acute angle θ whether tan θ increases or decreases as θ decreases.
If sin 3A = 1 and 0 < A < 90°, find `tan^2A - (1)/(cos^2 "A")`
Find the value of 'A', if 2cos 3A = 1
Evaluate the following: `(sin62°)/(cos28°)`
Express each of the following in terms of trigonometric ratios of angles between 0° and 45°: cosec64° + sec70°
If sin(θ - 15°) = cos(θ - 25°), find the value of θ if (θ-15°) and (θ - 25°) are acute angles.
If A + B = 90°, prove that `(tan"A" tan"B" + tan"A" cot"B")/(sin"A" sec"B") - (sin^2"B")/(cos^2"A")` = tan2A
