Advertisements
Advertisements
प्रश्न
If sin x + cos y = 1 and x = 30°, find the value of y
Advertisements
उत्तर
Given that x = 30°
sin x + cos y = 1
sin 30° + cos y = 1
cos y = 1 – sin 30°
cos y = 1 –`(1)/(2)`
cos y = `(1)/(2)`
cos y = cos 60°
y = 60°
APPEARS IN
संबंधित प्रश्न
Solve the following equation for A, if sin 3 A = `sqrt3 /2`
State for any acute angle θ whether cos θ increases or decreases as θ increases.
Solve the following equation for A, if `sqrt3` cot 2 A = 1
Find the value of 'A', if cosec 3A = `(2)/sqrt(3)`
If A = B = 60°, verify that: sin(A - B) = sinA cosB - cosA sinB
In a rectangle ABCD, AB = 20cm, ∠BAC = 60°, calculate side BC and diagonals AC and BD.
Find the value 'x', if:
If tan x° = `(5)/(12) . tan y° = (3)/(4)` and AB = 48m; find the length CD.
Evaluate the following: cot27° - tan63°
Evaluate the following: `(2sin28°)/(cos62°) + (3cot49°)/(tan41°)`
