Math, asked by nani6455, 1 year ago

cos (60+30)=cos 60 cos 30-sin 60 sin30

Answers

Answered by ishan0

8

cos90
=0
hope it help

ishan0: thanks

Answered by jasjeet1433

9

cos(60+30)=cos60cos30-sin60sin30

cos(90)=cos60cos(90-60)-sin60sin(90-60)

cos90=cos60.sin60-sin60.cos60

cos90=0

Previous Question

Next Question

Similar questions

Chemistry, 7 months ago

sulphuric acid is used to prepare other acid ,because of its option. a)dacidity. b)dlow volatility. c)dstrong dehydrating nature. d)all if these...

Math, 7 months ago

the value of 0.9999 is ?

History, 7 months ago

2. Makatarungan ba ang ginawang pagbitay kina Padre Gomez, Burgos at Zamora? Bakit?

English, 1 year ago

he____ (be) a strong soldier before he got injured in an acciclent...

Math, 1 year ago

Please tell the answer for this question with explaintion...

English, 1 year ago

. in many country luxury_______are not so easily available.

Social Sciences, 1 year ago

in extra humid atmosphere which type of motor will be selected...

Chemistry, 1 year ago

How do you calculate valency of an element..? With examples...