Advertisements
Advertisements
प्रश्न
`(sin 40° + cos 50°)/(tan 38°20')`
उत्तर
`(sin 40° + cos 50°)/(tan 38°20')`
= `(0.6428 + 0.6428)/(0.7907)`
= `(1.2856)/(0.7907)`
= 1.6259.
APPEARS IN
संबंधित प्रश्न
Without using trigonometric tables, evaluate
`sin^2 34^@ + sin^2 56^@ + 2tan 18^@ tan 72^@ - cot^2 30^@`
Without using trigonometric tables, prove that:
(sin 65° + cos 25°)(sin 65° − cos 25°) = 0
Without using trigonometric tables, prove that:
sin35° sin55° − cos35° cos55° = 0
A man in a boat rowing away from a lighthouse 100 m high takes 2 minutes to change the angle of elevation of the top of the lighthouse from 60° to 30°. Find the speed of the boat in metres per minute [Use `sqrt3` = 1.732]
Solve : Sin2θ - 3sin θ + 2 = 0 .
From the trigonometric table, write the values of cos 23°17'.
Solve the following equation: `(cos^2θ - 3 cosθ + 2)/sin^2θ` = 1.
Using trigonometric table evaluate the following:
cos 64°42' - sin 42°20'
The length of a shadow of a tower standing on a level plane is found to be 2y meters longer when the seen's altitude is 30° than when it was 45° prove that the height of the tower is y ( √3 + 1 ) meter.
If sin θ = 1, then the value of `1/2 sin(theta/2)`is ______.