Advertisements
Advertisements
Question
Evaluate the following: `(cos34° cos35°)/(sin57° sin56°)`
Advertisements
Solution
`(cos34° cos35°)/(sin57° sin56°)`
= `(cos(90° - 56°) cos(90° - 57°))/(sin57° sin56°)`
= `(sin56° sin57°)/(sin57° sin56°)`
= 1.
APPEARS IN
RELATED QUESTIONS
Solve the following equation for A, if sin 3 A = `sqrt3 /2`
If 4 sin2 θ – 1 = 0 and angle θ is less than 90°, find the value of θ and hence the value of cos2 θ + tan2 θ.
Calculate the value of A, if (tan A - 1) (cosec 3A - 1) = 0
Solve for x : cos `(x/(2)+10°) = (sqrt3)/(2)`
Solve for x : cos2 30° + cos2 x = 1
Find the value of 'A', if (2 - cosec 2A) cos 3A = 0
Find the value of 'x' in each of the following:
Find the value 'x', if:
Find the value 'x', if:
Express each of the following in terms of trigonometric ratios of angles between 0° and 45°: cos84° + cosec69° - cot68°
