If Tan theta=2 then find the value of cos theta + sin theta
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Answered by
5
Answer:
check the attachment for complete answer...
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vidhi7645:
The second last step...there is a mistake...I mean I checked the answer in my booklet it shows 3/ underoot5
yes I simplied the answer
Okay ...thanks
I just rationalized the denominator 3/root5
thank you
Answered by
1
Answer:
3/√5
Step-by-step explanation:
let y= cos$+sin$
= cos$(1+tan$)
=(1+tan$)/sec$
=(1+2)/√(1+tan^2$).
=3/√5
because 1+tan^2$=sec^2$
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