Tentukan nilai berikut: A. Sin 30° × Cos 45° + Sec 30° × Cot 60° adalah..... B.Cos 45° × Tan 30° × (Sin 60°+ Sec 30°) adalah...... Tolong jawab ya ka,Pertanyaan

sin 30 = 1/2
cos 45 = √2/2
sec 30 = 1/sin30 = 1÷(1/2) = 2
cot 60 = sin60/cos60 = √3/2÷1/2= √3
A. sin 30× cos 45 + sec30 × cot60
= (1/2)×(√2/2) + (2)(√3)
=(√2/4) + (2√3)

cos 45 = √2/2
tan30 = sin30/cos30 = (1/2)÷(√3/2) = √3
sin60 = √3/2
sec30 = 2
B. cos45 × tan30 × (sin60+sec30)
= (√2/2) × (√3) × (√3/2 + 2)
= (√6/2) × (√3/2 + 2)
= (√18/4 + 2√6/4)
= (√18 + 2√6)/4
= (3√2 + 2√6)/4

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