Question

show that sin35° sec35°=cot55°​

Answer 1

Answer:

since cos (a+b) =- (sin a sinb - cos a cos b)

so cos (35+55) = -(sin35 sin 55- cos 35 cos 55)

so = - cos 90= 0

Step-by-step explanation: this might help you and please mark me as the brainliest