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