Question

sin-60° + 2tan 45º – cos30°
If sin A = 2, then sec A =​

Answer 1

Answer:

sin a =2

we know ,

sin²a + cos² a= 1

2² + cos²a =1

cos²a= -3

cosa = -√3

cos a =1/seca

seca= -1/√3

on rationalising the denominator u will get

seca = -√3/3