Math, asked by rohit8158, 1 year ago

Evaluate: 2(cos58/sin32)-^3(cos38 cosec52/tan15 tan60 tan75)

Answers

Answered by umasathya
5

Answer:

Step-by-step explanation:

given:

2(cos 58/sin32)

= 2(cos58/cos58)                    [ since cos(90-Ф) = sinФ ]

=2                                     -----> 1

now second part :

3(sin 52* /sin 52)                    [ since cosecФ = 1/sinФ ]

=3                                    -----> 2

1 + 2

⇒ 2+ 3/ tan 15 * tan 60* tan 75

⇒5/ cot 75 * tan 60 * tan 75                    [ since tan(90-Ф) = cotФ ]

⇒5/tan 60

⇒5/√3                                                       [ since tan 60 =√3 ]

⇒5√3/3 is the answer

hope it helps

Answered by frustratedinsaan4545
0

Answer:

5 root 3/3

Step-by-step explanation:

given:

2(cos 58/sin32)

= 2(cos58/cos58)                    [ since cos(90-Ф) = sinФ ]

=2                                     -----> 1

now second part :

3(sin 52* /sin 52)                    [ since cosecФ = 1/sinФ ]

=3                                    -----> 2

1 + 2

⇒ 2+ 3/ tan 15 * tan 60* tan 75

⇒5/ cot 75 * tan 60 * tan 75                    [ since tan(90-Ф) = cotФ ]

⇒5/tan 60

⇒5/√3                                                       [ since tan 60 =√3 ]

⇒5√3/3 is the answer

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