1)5sin211+8cos59-5sin31/sin54sin67-sin36sin23=? 2) 2sin54+3cos36-2cos144/sin70sin74-sin20sin16=? помогите решить

1 (5sin(270-59)+8cos59-5sin(90-59))/(sin(90-36)sin(90-23)-sin36sin23))= =(-5cod59+8cos59-5cos59)/(cos36cos23-sin36sin23)= =-2cos59/cos(36+23)=-2cos59/cos59=-2 2 (2sin(90-36)+3cos36-2cos(180-36))/(sin(90-20)sin(90-16)-sin20sin16)= =(2cos36+3cos36+2cos36)/(cos20cos16-sin20sin16)= =7cos36/cos(20+16)=7cos36/cos36=7