Advertisements
Advertisements
Question
Use tables to find cosine of 26° 32’
Solution
cos 26° 32’ = cos (26° 30’ + 2’)
= 0.8949 − 0.0003
= 0.8946
APPEARS IN
RELATED QUESTIONS
Prove the following trigonometric identities.
(secθ + cosθ) (secθ − cosθ) = tan2θ + sin2θ
if `3 cos theta = 1`, find the value of `(6 sin^2 theta + tan^2 theta)/(4 cos theta)`
if `sqrt3 tan theta = 3 sin theta` find the value of `sin^2 theta - cos^2 theta`
A triangle ABC is right angles at B; find the value of`(secA.cosecC - tanA.cotC)/sinB`
Find the value of x, if sin x = sin 60° cos 30° + cos 60° sin 30°
Use tables to find the acute angle θ, if the value of cos θ is 0.9574
Evaluate:
`(5sin66^@)/(cos24^@) - (2cot85^@)/(tan5^@)`
Evaluate:
cos 40° cosec 50° + sin 50° sec 40°
Find the value of the following:
sin 21° 21′
If sin A = `3/5` then show that 4 tan A + 3 sin A = 6 cos A