. If 4 cos2 A-3 = 0 and 0° <- A <- 90°;
find : (i) angle A (ii) cos 3A
(iii) tan? A + cos? A
Answers
Answered by
10
Step-by-step explanation:
4cos²A=3
cos²A=3/4
cosA=√3/2
since cos 30°=√3/2
therefore angleA= 30°
cos 3A= cos90°
therefore, cos3A=0
tan²A+cos²A=sin²A/cos²A+cos²A
by putting the value of A we get,
1/4/3/4+3/4=1/3+3/4=7/12
Answered by
1
Answer:
gtdhuxydfi യ്സ്ഫുസിസിക്യൂവ്വ്സൈസ്യ്സ്യ്യക്സിസ്ഹ്വ്വ്വിവിസിസുക്
hgiguffiffcyxvjvhovuccivjv
icuxyxucuvivi f, zgzyzxux
Similar questions
India Languages,
3 months ago
English,
3 months ago
Environmental Sciences,
3 months ago
Math,
6 months ago
English,
6 months ago
Physics,
10 months ago
Geography,
10 months ago