Advertisements
Advertisements
प्रश्न
The value of sin 15° cos 15° is:
विकल्प
1
`1/2`
`sqrt3/2`
`1/4`
MCQ
उत्तर
`1/4`
Explanation:
sin 15° cos 15° = `1/2` (2 sin 15° cos 15°)
= `1/2` (sin 30°)
`= 1/2 (1/2)`
`= 1/4`
shaalaa.com
Trigonometric Ratios of Compound Angles
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Prove that 2 tan 80° = tan 85° – tan 5°.
Prove that:
tan 4A tan 3A tan A + tan 3A + tan A – tan 4A = 0
If sin A = `12/13`, find sin 3A.
If sin A = `3/5`, find the values of cos 3A and tan 3A.
If sin α + sin β = a and cos α + cos β = b, then prove that cos(α – β) = `(a^2 + b^2 - 2)/2`
If tan α = `1/7`, sin β = `1/sqrt10`. Prove that α + 2β = `pi/4` where 0 < α < `pi/2` and 0 < β < `pi/2`.
If tan x = `3/4` and `pi < x < (3pi)/2`, then find the value of sin `x/2` and cos `x/2`.
Find the value of sin 75°.
The value of sin 15° is:
The value of sin (-420°)