Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

F I N D space T H E space V A L U E space O F space cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis
Asked by Topperlearning User | 31 Aug, 2016, 09:36: PM
answered-by-expert Expert Answer

cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis equals cos left parenthesis fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis fraction numerator 5 straight pi over denominator 12 end fraction equals 75 to the power of 0 cos left parenthesis 75 right parenthesis equals cos left parenthesis 45 plus 30 right parenthesis equals cos 45 cos 30 minus sin 45 sin 30 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 1 over denominator square root of 2 end fraction fraction numerator square root of 3 over denominator 2 end fraction minus fraction numerator 1 over denominator square root of 2 end fraction 1 half equals fraction numerator square root of 3 minus 1 over denominator 2 square root of 2 end fraction

Answered by | 31 Aug, 2016, 11:36: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Maths
cos 1710
Asked by SasipriyaNagappan | 27 Jul, 2023, 07:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
sin25+sin210+sin215+......+sin2180
Asked by karthikeyainuguri2009 | 10 Apr, 2022, 03:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Show that sum of 9 Sin4 θ - 6 Sin6 θ and 9 Cos4 θ - 6 Cos6 θ  remains constant for all values of θ.
Asked by nareshpanchal76 | 07 Oct, 2020, 10:13: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
if sintita +costita =1/5 and 0≤thita
Asked by sravikakanneganti | 19 Sep, 2020, 05:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Find the values of x for which it satisfies tanx = cot 5 x as well as sin 2x = cos 4x [x€ (-π/2,π/2)]
Asked by sajal2402 | 30 Jul, 2019, 11:19: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Sin (90-thita) 
Asked by Divyataak1984 | 24 Jun, 2019, 08:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
pls solve
question image
Asked by pb_ckt | 14 Jun, 2019, 11:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
pls solve
question image
Asked by pb_ckt | 14 Jun, 2019, 11:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
cosec x (sec x - 1) - cot x (1 - cos x) = tan x - sin x Prove the Following Identity.
Asked by Anish | 16 Jun, 2018, 08:38: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
F I N D space T H E space V A L U E space O F space cos left parenthesis negative fraction numerator 5 straight pi over denominator 12 end fraction right parenthesis
Asked by Topperlearning User | 31 Aug, 2016, 09:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×