Wiedząc, że tgα=3/5 Oblicz wartość wyrażenia 2sinα-1/3cosα.
tgα=3/5
obliczmy przeciwprostokatną z tw. Pitagprasa
3²+5² = c²
9+25 =c²
34 =c²
c=√34
3 5 6√34 5√34 18√34 5√34 13√34
2sinα - 1/3cosα = 2*------- - ⅓ *---------- = ------------ - ----------- = ---------- - ----------- = -----------
√34 √34 34 102 102 102 102
2sinα - 1/3cosα = 2 * ------- - ⅓ *---------- = ------------ - ----------- = ---------- - ----------- = -----------
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
tgα=3/5
obliczmy przeciwprostokatną z tw. Pitagprasa
3²+5² = c²
9+25 =c²
34 =c²
c=√34
3 5 6√34 5√34 18√34 5√34 13√34
2sinα - 1/3cosα = 2*------- - ⅓ *---------- = ------------ - ----------- = ---------- - ----------- = -----------
√34 √34 34 102 102 102 102
tgα=3/5
obliczmy przeciwprostokatną z tw. Pitagprasa
3²+5² = c²
9+25 =c²
34 =c²
c=√34
3 5 6√34 5√34 18√34 5√34 13√34
2sinα - 1/3cosα = 2 * ------- - ⅓ *---------- = ------------ - ----------- = ---------- - ----------- = -----------
√34 √34 34 102 102 102 102