Advertisements
Advertisements
प्रश्न
Evaluate:
3cos80° cosec10° + 2 sin59° sec31°
Advertisements
उत्तर
sin (90° = θ) = cos θ
cos (90° = θ) = sinθ
3 sin (90° - 80°) cosec 10° + 2 cos (90° - 59°) sec 31°
3 sin 10° cosec 10° + 2 cos 31° sec31°
sin θ cosecθ = 1, cos θ secθ = 1
3 + 2 = 5
संबंधित प्रश्न
Solve.
`sec75/(cosec15)`
Find the value of x, if tan x = `(tan60^circ - tan30^circ)/(1 + tan60^circ tan30^circ)`
Use tables to find sine of 34° 42'
Use tables to find cosine of 26° 32’
Use trigonometrical tables to find tangent of 37°
If tanθ = 2, find the values of other trigonometric ratios.
If angles A, B, C to a ∆ABC from an increasing AP, then sin B =
If 5θ and 4θ are acute angles satisfying sin 5θ = cos 4θ, then 2 sin 3θ −\[\sqrt{3} \tan 3\theta\] is equal to
Prove the following.
tan4θ + tan2θ = sec4θ - sec2θ
If y sin 45° cos 45° = tan2 45° – cos2 30°, then y = ______.
