Advertisements
Advertisements
Question
Find the value of 'x' in each of the following:
Advertisements
Solution
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
RELATED QUESTIONS
Find the magnitude of angle A, if 2 sin A cos A - cos A - 2 sin A + 1 = 0
State for any acute angle θ whether tan θ increases or decreases as θ decreases.
Find the magnitude of angle A, if tan A - 2 cos A tan A + 2 cos A - 1 = 0
Solve for x : cos `(x)/(3) –1` = 0
In the given figure, PQ = 6 cm, RQ = x cm and RP = 10 cm, find
a. cosθ
b. sin2θ- cos2θ
c. Use tanθ to find the value of RQ
In a trapezium ABCD, as shown, AB ‖ DC, AD = DC = BC = 24 cm and ∠A = 30°. Find: length of AB
Find x and y, in each of the following figure:
Evaluate the following: cot20° cot40° cot45° cot50° cot70°
Evaluate the following: `(3sin^2 40°)/(4cos^2 50°) - ("cosec"^2 28°)/(4sec^2 62°) + (cos10° cos25° cos45° "cosec"80°)/(2sin15° sin25° sin45° sin65° sec75°)`
If P, Q and R are the interior angles of ΔPQR, prove that `cot(("Q" + "R")/2) = tan "P"/(2)`
