If ∠A is an acute angle and tanA=√6+2/√6−2, find cosA.
Answers
Answered by
0
Answer:
This may help you
Step-by-step explanation:
tanA=
3
1
sinB=
2
1
cos(A+B)=?
cos(A)
sinA
=
2
1
×
3
2
sinA=
2
1
sinB=
2
1
⇒B=30
0
cosA=
2
3
=A=30
0
cos(A+B)=cos(30
0
+30
0
)
=cos60
0
=
2
1
Ans.
Answered by
0
Answer:
cosA = 1/√2
Step-by-step explanation:
sum is explained in detail in the picture
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